MapServer 4.4.0 released
Daniel Morissette
dmorissette at DMSOLUTIONS.CA
Mon Nov 29 20:59:00 PST 2004
Good evening,
The MapServer 4.4.0 release is now officially available, thanks to the
hard work of everyone involved.
Here is a very quick summary of what's new in version 4.4:
* Added WCS support (server only)
* Added support for Time dimension in WMS
* Lots of fixes/improvements to the OGC WMS and WFS interfaces (too many
to list here). MapServer 4.4 passes all the tests of the OGC WMS 1.1.1
test suite and is ready to be certified (Formal "WMS Compliance"
certification with OGC is in the works).
* Added FastCGI support
* Lots of fixes to allow running in long-lived processes and
multithreaded environments (memory leaks, mutex locking, etc.).
* Added connection pooling (implemented for SDE and PostGIS).
* Lots of improvements to SWIG MapScript API and docs.
* Support for i18n encodings in map labels. Tested with Chinese,
Japanese and Thai.
* Added ability to produce rotated maps (i.e. North is not at the top)
* Completion of SDE versioned query support
... and many many more fixes and enhancements. See the HISTORY.TXT that
comes with the source package for the complete list (relevant parts
included below).
The source code package is available for download on the MapServer
download page at http://mapserver.gis.umn.edu/dload.html and the default
documentation pages should be switched to use version 4.4 documents shortly.
Windows binaries should also be available shortly at the usual
locations. I would invite those producing prebuilt binaries to please
reply to this email and announce the availability of their binaries and
their URL.
As we've done for previous releases, we will produce 4.4.x bugfix
releases as required in the coming months. With respect to 4.2.x: we
will not produce any more 4.2.x releases unless major issues (e.g.
security issues) are ever found in 4.2.5.
What about the next release? The consensus seems to be to aim for a 4.6
release in the next 4-6 months. There are no major changes or new
features planned for 4.6 at this point, mostly improvements of existing
features. We'll try to document our plan for 4.6 and share it with this
list when it's available.
Enjoy!
Daniel
------------------------------------------------------------
Daniel Morissette dmorissette at dmsolutions.ca
DM Solutions Group http://www.dmsolutions.ca/
------------------------------------------------------------
Complete list of changes since 4.2 (excerpt from HISTORY.TXT)
Version 4.4.0 (2004-11-29)
--------------------------
- Fixed WMS GetCapabilities 1.1.0 crash when wms_style_<...>_legendurl_*
metadata were used (bug 1096)
- WCS GetCapabilities : Added ResponsibleParty support.
- WMS GetCapabilities : Service online resource was not url encoded (bug
1093)
- Fixed php mapscript problem with wfs_filter selection : Bug 1092.
- Fixed encoding problem with WFS server when wfs_service_onlineresource
was not explicitly specified (bug 1082)
- Add trailing "?" or "&" to connection string when required in WFS
client layers using GET method (bug 1082)
- Fixed : SLD rasters was failing when there was Spatial Filter (Bug 1087)
- Fixed mapwfslayer.c build error when WFS was not enabled (bug 1083)
- Check that we have vsnprintf in mapimagemap.c before using it.
Version 4.4.0-beta3 (2004-11-22)
--------------------------------
- Added tests to mimimize the threat of recursion problems when evaluating
LAYER REQUIRES or LABELREQUIRES expressions. Note that via MapScript it
is possible to circumvent that test by defining layers with problems
after running prepareImage. Other things crop up in that case too
(symbol
scaling dies) so it should be considered bad programming practice
(bug 1059).
- Added --with-sderaster configure option.
- Make sure that msDrawWMSLayerLow calls msDrawLayer instead of
msDrawRasterLayerLow directly ensuring that some logic (transparency)
that
are in msDrawLayer are applied (bug 541).
- Force GD/JPEG outputFormatObjects to IMAGEMODE RGB and TRANSPARENT OFF
if they are RGBA or ON. Makes user error such as in bug 1703 less
likely.
- Advertize only gd and gdal formats for wms capabilities (bug 455).
- Pass config option GML_FIELDTYPES=ALWAYS_STRING to OGR so that all GML
attributes are returned as strings to MapServer. This is most efficient
and prevents problems with autodetection of some attribute types (bug
1043).
- msOGCWKT2ProjectionObj() now uses the
OGRSpatialReference::SetFromUserInput()
method. This allows various convenient setting options, including the
ability to handle ESRI WKT by prefixing the WKT string with "ESRI::".
- Fixed GetLegendGraphic in WMS Capabilities that were missing the '?'
or '&' separator if it was not included in wms_onlineresource (bug 1065).
- Updated WMS/WFS client and server code to lookup "ows_*" metadata names
in addition to the default "wms_*" (or "wfs_*") metadatas (WCS was
already
implemented this way). This reduces the amount of duplication in mapfiles
that support multiple OGC interfaces since "ows_*" metadata can be used
almost everywhere for common metadata items shared by multiple OGC
interfaces (bug 568).
- Added ows_service_onlineresource metadata for WMS/WFS to distinguish
between service and GetMap/Capabilities onlineresources (bug 375).
- Added map->setSize() to PHP MapScript (bug 1066).
- Re-enabled building PHP MapScript using PHP's bundled regex/*.o. This is
needed to build in an environment with PHP configured as an Apache DSO
(bugs 990, 520).
- Fixed problem with raster dither support on windows (related to ascii
encoding pointers) (bug 722).
- Moved PHP/SWIG MapScript layer->getExtent() logic down to
msLayerGetExtent()
to avoid code duplication (bug 1051).
- Added SDE Raster drawing support (experimental).
- HTML legends: Added [leg_header_html] and [leg_footer_html] (bug 1032).
- Added "z" support in SWIG MapScript for pointObj (bug 871).
- In PHP Mpascript when using ms_newrectobj, the members minx, miny,
maxx, maxy are initialized to -1 (bug 788).
- Write out proper world file with remote WMS result, it was off by half
a pixel (bug 1050).
- Send a warning in the wms capabilities if the layer status is set
to default (bug 638).
- Fixed PHP MapScript compile warnings: dereferencing type-punned pointer
will break strict-aliasing rules (bug 1053).
- Added $layer->isVisible() to PHP MapScript (bug 539).
- Ported $layer->getExtent() to PHP MapScript (bug 826).
- wms_group_abstract can now be used in the capabilities (bug 754).
- If wms_stylelist is an empty string, do not output the <StyleList> tag
for MapContexts (bug 595).
- Avoid passing FILE* to GD library by utilizing GD's gdIOCtx interface
(bug 1047).
- Output warning in wms/wfs capabilities document if layer,group,map
names have
space in them (bug 486, bug 646).
- maporaclespatial.c: fixed declarations problems (bug 1044).
- Allow use of msOWSPrintURLType with no metadata. In this case the default
parameters will be used (bug 1001).
- Ensure the outputFormatObj attached to msImageLoadGDStream() results
reflect
the interlacedness of the loaded image. Also ensure that the RGB PNG
reference images work (make imagemode match gdImg) (bug 1039).
- Fixed support for non-square pixels in WCS (bug 1014).
- Expose only GD formats for GetLegendGraphic in the capabilities (bug
1001).
- Check for supported formats when process a GetLegendGraphic request
(bug 1030).
- mapraster.c: fixed problem with leaks in tileindexed case where the
tile index is missing (bug 713).
- Oracle Spatial: implemented connection pool support for Oracle Spatial.
New layer data parameters to support query functions, added
"using unique <column name>". Added "FILTER", "RELATE" and "GEOMRELATE"
parameters, now permit users to choose the Oracle Spatial Filter.
Modified
the internal SQL to always apply FILTER function. And improve the Oracle
Spatial performance.
- Centralize "stdout binary mode setting" for win32 in
msIO_needBinaryStdout().
Use it when writing GDAL files to stdout in mapgdal.c. Fixes
problems with
output of binary files from GDAL outputformat drivers on win32 via
WMS/WCS.
- MapServer now provides one default style named (default), title and
LegendURL when generating capabilities. Added also the possibility
to use
the keyword default for STYLES parameter when doing a GetMap
(..&STYLES=default,defeault,...) (bug 1001).
- Add xlink:type="simple" in WMS MetadataURL (bug 1027).
Version 4.4.0-beta2 (2004-11-03)
--------------------------------
- free mapServObj properly in mapserv.c in OWS dispatch case to fix minor
memory leaks.
- modified msCloseConnections() to also close raster layers so that
held raster query results will be freed.
- modified raster queries to properly set the classindex in the resultcache.
- modified msDrawQueryCache() to be very careful to not try and lookup
information on out-of-range classindex values. This seems to occur when
default shapes come back witha classindex of 0 even if there are no
classes.
(ie. raster query results).
- the loadmapcontext function has changed it behaviour. Before the 4.4
relase
when loading layers from a map context, the layer name was built using
a unique prefix + the name found in the context (eg for the 2nd layer in
map context named park, the layer name generated would possibly be
l:2:park).
Now the loadmapcontext takes a 2nd optional argument to force the
creation
of the unique names. The default behaviour is now to have the layer name
equals to the name found in the context file (bug 1023).
- Fixed problem with WMS GetCapabilities aborting when wms_layer_group is
used for some layers but not for all (bug 1024).
- Changed raster queries to return the list of all pixel values as an
attribute named "value_list" rather than "values" to avoid conflict with
special [values] substitution rule in maptemplate.c.
- Fixed raster queries to reproject results back to map projection, and to
do point queries distance checking against the correct projection
(bug 1021).
- Get rid of WMS 1.0.8 support. It's not an officially supported verison
of the spec anyway: it's synonymous for 1.1.0 (bug 1022).
- Allow use of '=' inside HTML template tag parser (bug 978).
- Use metadata ows_schema_location for WMS/WFS/WCS/SLD (bugs 999, 1013,
938).
The default value if metadata is not found is
http://schemas.opengeospatial.net.
- Generate a RULE <Name> tag when generating an SLD (bug 1010).
- WMS GetLegendGraphic uses now the RULE value to return an icon for
a class that has the same name as the RULE value (bug 843).
- Add msOWSPrintURLType: This funciton is a generic URL printing fuction
for
OGC specification metadata (WMS, WFS, WCS, WMC, etc.) (bug 944).
- Support MetadataURL, DataURL and LegendURL tags in WMS capabilities
document and MetadataURL in WFS capabilities.
- SWIG mapscript: clone methods for layerObj, classObj, styleObj (bug 1012).
- Implemented an intarray helper class for SWIG mapscript which allows for
multi-language manipulation of layer drawing order (bugs 853, 1005).
- Fixed WMS GetLegendGraphic which was returning an exception (GD error)
when requested layer was out of scale (bug 1006).
- Fixed maplexer.l to work with flex 2.5.31 (bug 975).
- WMS GetMap requests now have MS_NONSQUARE enabled by default. This means
that if the width/height ratio doesn't match the extent's x/y ratio then
the map is stretched as stated in the WMS specification (bug 862).
- In WMS, layers with no explicit projection defined will receive a copy
of the map's projectionObj if a new SRS is specified in the GetMap
request
or if MS_NONSQUARE is enabled. This will prevent the problem with layers
that don't show up in WMS request when the server administrator forgets
to explicitly set projections on all the layers in a WMS mapfile (bug
947).
- Implemented FastCGI cleanup support for win32 and unix in mapserv.c.
- Solved configure/compile issues with libiconv (bugs 909, 1017).
Version 4.4.0-beta1 (2004-10-21)
--------------------------------
- "shared" compilation target now supports some kind of versioning,
should at least prevent libmap.so version collisions when upgrading
MapServer on a server (bug 982).
- When no RULE parameter has been specified in the WMS request
a legend should be returned with all classes for the specified LAYER.
Changes has been made in mapwms.c (bug 653). Also if the SCALE parameter
is provided in the WMS request is will be used to determine whether
the legend of the specified layer should be drawn in the case that the
layer is scale dependant (big 809).
- Nested layers in the capabilities are supported by using a new metadata
tag WMS_LAYER_GROUP (bug 776).
- Added greyscale+alpha render support if mapdrawgdal.c (bug 965).
- Added --with-fastcgi support to configure.
- support OGC mapcontext through mapserver cgi (bug 946).
- support for reading 3d shape file (z) (bug 869).
- add php mapscript functions to expose the z element (bug 870).
- imageObj::write() method for SWIG mapscript (bug 941).
- Protect users from 3 potential sources of threading problems: parsing
expression strings outside of msLoadMap, evaluating mapserver logical
expressions, and loading symbol set files outside of msLoadMap (bug 339).
- Various fixes allowing unit tests to run leak free under valgrind on
i686. Memory is now properly freed when exiting from common error
states (bug 927).
- Restored ability to render transparent (indexed or alpha) pixmap symbols
on RGB map images, including annotation layers and embedded scalebars.
This feature remains OFF by default for map layers and is enabled by
specifying TRANSPARENCY ALPHA (bugs 926, 490).
- mapserv_fcgi.c removed. Committed new comprehensive FastCGI support.
- New mapserver exceptions for Java mapscript thanks to Umberto Nicoletti
(bug 895).
- Removed mapindex.c, mapindex.h, shpindex.c components of old unused
shapefile indexing method.
- Use the symbol size instead of 1 for the default style size value. This is
done by setting the default size to -1 and adding
msSymbolGetDefaultSize()
everywhere to get the default symbolsize (Bug 751).
- Correct Bug with GML BBOX output when using a <Filter> with a
GetFeature request (Bug 913).
- Encode all metadatas and mapfile parameters outputed in a xml document
(Bug 802).
- Implement the ENCODING label parameter to support internationalization.
Note this require the iconv library (Bug 858).
- New and improved Java mapscript build provided by unicoletti at prometeo.it
and examples by Y.K. Choo (bug 876).
- MapContext: Cleanup code to make future integration more easily and
output
SRS and DataURL in the order required by the spec.
- Fixed issue with polygon outline colors and brush caching (bug 868).
- New C# mapscript makefiles and examples provided by Y.K. Choo
<ykchoo at geozervice.com> committed under mapscript/csharp/ (bug 867).
- Renamed 'string' member of labelCacheMemberObj to 'text' to avoid
conflicts in SWIG mapscript with C# and Java types (bug 852).
- Fixed Bug 866 : problem when generating an sld on a pplygon layer
- SWIG mapscript: map's output image width and height should be set
simultaneously using new mapObj::setSize() method. This performs
necessary map geotransform computation. Direct setting of map width
and height is deprecated (bug 836).
- Fixed bug 832 (validate srs value) : When the SRS parameter in a GetMap
request contains a SRS that is valid for some, but not all of the layers
being requested, then the server shall throw a Service Exception
(code = "InvalidSRS"). Before this fix, mapserver use to reproject
the layers to the requested SRS.
- Fixed bug 834: SE_ROW_ID in SDE not initialized for unregistered SDE
tables
- Fixed bug 823 : adding a validation of the SRS parameter when doing
a GetMap request on a wms server. Here is the OGC statement :
'When the SRS parameter in a GetMap request contains a SRS
that is valid for some, but not all of the layers being requested,
then the server shall throw a Service Exception (code = "InvalidSRS").'
- Set the background color of polygons or circles when using transparent
PIXMAP symbol.
- SWIG mapscript class extensions are completely moved from mapscript.i
into separate interface files under mapscript/swiginc.
- Overhaul of mapscript unit testing framework with a comprehensive test
runner mapscript/python/tests/runtests.py.
- Modified the MS_VALID_EXTENT macro to take an extent as its argument
instead of the quartet of members. MapServer now checks that extents
input
through the mapfile are valid in mapfile.c (web, map, reference,
and layer). Modified msMapSetExtent in mapobject.c to use the new
macro instead of its home-grown version. Modified all cases that used
MS_VALID_EXTENT to the new use case.
- Layers now accept an EXTENT through the mapfile (bug 786). Nothing
is done with it at this point, and getExtent still queries the
datasource rather than getting information from the mapfile-specified
extent.
- Fixed problem with WMS GetFeatureInfo when map was reprojected. Was a
problem with msProjectRect and zero-size search rectangles (bug 794)
- MapServer version now output to mapscriptvars and read by Perl Makefile.PL
and Python setup.py (bug 795).
- Map.web, layer, and class metadata are exposed in SWIG mapscript as
first-class objects (bug 737).
- Add support for spatial filters in the SLD (Bug 782)
- A few fixes to allow php_mapscript to work with both PHP4 and PHP5.
PHP5 support should still be considered experimental. (bug 718)
- Fixed SDE only recognizing SE_ROW_ID as the unique column (bug 536).
The code now autosenses the unique row id column.
- Enhanced SDE support to include support for queries against
user-specified versions. The version name can be specified as the
last parameter of the CONNECTION string.
- Fixed automated generation of onlineresource in OWS GetCapabilities
when the xxx_onlineresource metadata is not specified: the map= parameter
used to be omitted and is now included in the default onlineresource if
it was explicitly set in QUERY_STRING (bug 643)
- Fixed possible crash when producing WMS errors INIMAGE (bug 644)
- Fixed automated generation of onlineresource in OWS GetCapabilities
when the xxx_onlineresource metadata is not specified: the map= parameter
used to be omitted and is now included in the default onlineresource if
it was explicitly set in QUERY_STRING (bug 643)
- Fixed an issue with annotation label overlap. There was an issue with
the way msRectToPolygon was computing it's bounding box. (bug 618)
- Removed "xbasewohoo" debug output when using JOINs and fixed a few
error messages related to MySQL joins (bug 652)
- Fixed "raster cracking" problem (bug 493)
- Improvements to Makefile.vc, and nmake.opt so that a mapscriptvars file
can be produced on windows.
- Updated setup.py so Python MapScript builds on win32.
- Added preliminary raster query support.
- No more Python-stopping but otherwise benign errors raised from
msDrawWMSLayer() (bug 650).
- Finished prototyping all MapServer functions used by SWIG-Mapscript
and added 'void' to prototypes of no-arg functions, eliminating all
but two SWIG-Mapscript build warnings (bug 658).
- Mapscript: resolved issue with pens and dynamic drawing of points (bug
663).
- Mapscript: fixes to tests of shape copying and new image symbols.
- Mapscript: new OWSRequest class based on cgiRequestObj structure in
cgiutil.h is a first step to allow programming with MapServer's OWS
dispatching (bug 670).
- Mapscript: styles member of classObj structure is no longer exposed to
SWIG (bug 611).
- Implementation geotransform/rotation support in cgi core, and mapscript.i.
- Testing: fixed syntax error, 'EPSG' -> 'epsg' in test.map (bug 687).
Added an embedded scalebar which demonstrates that bug 519 is fixed.
The test data package is also made more complete by including two fonts
from Bitstream's open Vera fonts (bug 694).
- Mapscript (SWIG): remove promote and demote methods from layerObj. Use
of container's moveLayerUp/moveLayerDown is better, and this brings
the module nearer to PHP-Mapscript (bug 692).
- mapogr.cpp: Now echos CPLGetLastErrorMsg() results if OGR open fails.
- mapraster.c: fixed tile index corruption problem (bug 698)
- Mladen Turk's map copying macros in mapcopy.h clean up map cloning and
allow for copying of fontset and symbolset. Added cloning tests in
python/tests/testCloneMap.py and refactored testing suite (bugs 640 &
701).
- Mapscript: removing obsolete python/setup_wnone.py file.
- CONFIG MS_NONSQUARE YES now enables non-square pixel mode (mostly for
WMS).
Changes in mapdraw.c (msDrawMap()) to use the geotransform "hack" to
allow
non-square pixels.
- When using the text/html mime type in a GetFeature request, if the
layer's template is not set to a valid file, errors occur.
Correction is : the text/html is not advertized by default and
will only be advertized if the user has defined
"WMS_FEATURE_INFO_MIME_TYPE" "text/html" (bug 736)
- Make PHP MapScript's layer->open() produce a PHP Warning instead of a
Fatal error (bug 742)
- MapServer hash tables are now a structure containing a items pointer
to hashObj. See maphash.h for new prototypes of hash table functions.
In SWIG mapscript, Map, Layer, and Class metadata are now instances
of the
new hashTableObj class. fontset.fonts and Map.configoptions are also
instances of hashTableObj. The older getMetaData/setMetaData and
metadata iterator methods can be deprecated (bug 737).
- Mapscript-SWIG: made the arguments of mapObj and layerObj constructors
optional. A layerObj can now exist outside of a map and can be added
to a mapObj using the insertLayer method. mapObj.removeLayer now
returns a copy of the removed Layer rather than an integer (bug 759).
- Fixed $map->processTemplate() which was always returning NULL.
Bug introduced in version 4.0 in all flavours of MapScript (bug 410)
Version 4.2-beta1 (2004-04-17)
------------------------------
- Added support for WMS 1.1.1 in the WMS interface.
- Added support for WMS-SLD in client and server mode.
- Added support for attribute filters in the WFS interface.
- WMS Interface: several fixes to address issues found in running tests
against the OGC testsuite. One of the side-effects is that incomplete
GetMap requests that used to work in previous versions will produce
errors now (see bug 622).
- Modified configure scripts to be able to configure/build PHP MapScript
using an installed PHP instead of requiring the full source tree.
- Added ability to combine multiple WMS connections to the same server
into a single request when the layers are adjacent and compatible.
(bug 116)
- Support POSTed requests without Content-Length set.
- Added support for proper classification of non-8bit rasters.
- Added support for BYTE rawmode output type.
- Added support for multiple bands of output in rawmode.
- MySQL joins available
- Fixed problems with detection of OGRRegisterAll() with GDAL 1.1.9 in
configure due to GDAL's library name change. Fixed a few other minor
issues with GDAL/OGR in configure.
- Modified configure to disable native TIFF/PNG/JPEG/GIF support by default
if GDAL is enabled. You can still enable them explicitly if you like.
- Replace wms_style_%s_legendurl, wms_logourl, wms_descriptionurl,
wms_dataurl
and wms_metadataurl metadata by four new metadata by metadata
replaced. The
new metadata are called legendurl_width, legendurl_height,
legendurl_format,
legendurl_href, logourl_width, etc...
Old dependancy to the metadata with four value in it , space
separated, are
not kept.
- Implement DataURL, MetadataURL and DescriptionURL metadata in
mapcontext.c (bug 523)
- PHP MapScript's pasteImage() now takes a hex color value (e.g. 0xrrggbb)
for the transparent color instead of a color index. (bug 463)
- OGR data sources with relative paths are now checked relative to
SHAPEPATH first, and if not found then we try again relative to the
mapfile location. (bug 295)
- There is a new mapObj parameter called MAXSIZE to control maximum image
size to serve via the CGI and WMS interfaces. The default is 2048 as
before but it can be changed in the map file now. (bug 435)
- Added simple dataset for unit and regression tests (bug 453)
- PostGIS: added postresql_NOTICE_HANDLER() sending output via msDebug()
and only when layer->debug is set (bug 418)
- Added Apache version detection in configure and added non-blocking flag
on stderr in msDebug() to work around Apache 2.x bug (bug 458)
- MapScript rectObj: added optional bounding value args to constructor and
extended rectObj class with a toPolygon method (bug 508).
- MapScript pointObj: added optional x/y args to constructor (bug 508).
- MapScript colorObj: added optional RGB color value args to colorObj
constructor, and extended colorObj class with setRGB, setHex, and toHex
methods. The hex methods use hex color strings like '#ffffff' rather
than '0xffffff' for compatibility with HTML (bug 509).
- MapScript outputFormatObj: extended with a getOption method (bug 510).
- MapScript imageObj: added optional mapObj argument to the save method
resolving bug 549 without breaking current API. Also added optional
driver and filename arguments to constructor which allows imageObj
instances to be created with a specified driver or from files on disk
(bug 530). Added new code to Python MapScript which extends the
filename option to Python file-like objects (bug 550). This means
StringIO and urllib's network objects!
- MapScript classObj and styleObj: added a new styleObj shadow class and
extended classObj with getStyle, insertStyle, and removeStyle methods.
MapScript now supports multiple styles for dynamically created classes
(bug 548).
- MapScript layerObj: added getExtent, getNumFeatures extension methods,
allowing getShape to access inline features (bug 562).
- Added fixes for AMD64/Linux in configure (bug 565)
- Removed OGR_STATIC stuff in configure script that used to allow us to
build with OGR statically by pointing to the OGR source tree. That
means you can only build with OGR when *installed* as part of GDAL,
but that's what everyone is doing these days anyway.
- Mapscript outputFormatObj: extended constructor to allow format names,
and mapObj methods to append and remove output formats from the
outputformatlist (bug 511).
- New SWIG mapscript development documentation in the spirit of the
PHP-Mapscript readme file, but using reST (bug 576).
- Paving way for future changes to SWIG mapscript API with new features
enabled by NEXT_GENERATION_API symbol (bug 586).
- Added ability to set string member variables to NULL in PHP MapScript
(bug 591)
- New key iterators for map, layer, and class metadata hash tables
(bug 434) and fontset fonts hash table (bug 439).
- Fixed potential crash when using nquery with a querymap enabled and
some layers have a template set at the layer level instead of inside
classes (bug 569).
- New CONFIG keyword in the MAP object in a .map file to be used
to set external configuration parameters such as PROJ_LIB and control
of some GDAL and OGR driver behaviours (bug 619)
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