Package and link GEOS 3.4.2 (#26).
Fix for "geos_c.h" resolution.
Added geos/platform.h.
Added expat 2.1.0. Fixes Geometry toKML().
Merge commit 'd657b484fe29ba87ee848f22015ecc41d7f23725'
Merge geos into master.
Fixed tests that broke when converting functions to attribs.