[postgis-devel] st_isvalid linestring and multilinestring

[strk]

I've found the bug in GEOS, but also unused code in JTS
which probably confused the porting process.
In IsValidOp.java you're using an 'isChecked' private
boolean which you then never use.
I guess it used to be used before like it is in GEOS,
only it prevents (in GEOS) checking validity of any 
component past the first of any MULTI* !!!

Haven't checked in previous versions but the fact
neither JTS nor GEOS contained *any* testcase for
invalid geoms being after first one is pretty scary.

--strk;

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