[OpenLayers-Dev] Closure Compiler support

[christopher.schmidt at nokia.com]

> Full Builds:
> 
> 900504  OpenLayers-jsmin.js
> 719130  OpenLayers-closure.js (20% savings)
> 
> 200584  OpenLayers-jsmin.js.gz
> 172663  OpenLayers-closure.js.gz (14% savings)

As an experiment, I tested changing all cases of the
word OpenLayers to OL in the source code, to see if
that would help. While the uncompressed closure build
(unsurprisingly) shrunk by 30k to 685556, the gzipped
build (also unsurprisingly) did not change much,
dropping only 125 bytes to 172538. 

Assuming that all application code delivered to clients
is gzipped, there is relatively little to be gained
via trivial name changes like this. :)

-- Chris

> Lite Builds:
> 
> 123091  OpenLayers-lite-jsmin.js 
> 96678  OpenLayers-lite-closure.js (21% savings)
> 
> 30977  OpenLayers-lite-jsmin.js.gz
> 26347  OpenLayers-lite-closure.js.gz (15% savings)
> 
> Using the closure compiler, all OpenLayers tests continue to pass,
> and the examples that I have tested appear to continue to work. The live
> examples at http://openlayers.org/dev/examples/ are now using 
> a closure-based build as well, so if you have any problems with these
> examples, please report them to the mailing list.
> 
> As always, using minimal build profiles and gzipping javascript before
> delivering it is the best way to minimize Javascript download size.
> 
> Thanks!
> 
> -- Chris
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