Blender Git Loki

COLLADA: updated cmake and scons settings (on linux) to build against OpenCollada @ 675.

To build OpenCollada:
* apply this patch http://wiki.blender.org/index.php/File:[email protected]
* build by typing 'scons XMLPARSER=expatnative' (pcre and expat must be installed)
* after build, copy all compiled libs into 'lib' (Blender build will refer to it):

rm -rd lib
mkdir lib
find . -iname '*.a' | xargs cp -t lib