Added a Ramer-Douglas-Peucker line/polygon simplification algorithm.
Merge pull request #5 from derickr/rdp

Added a Ramer-Douglas-Peucker line/polygon simplification algorithm.
Merge branch 'master' of git://github.com/php-geospatial/geospatial into vincenty

Conflicts:
	geospatial.c
	php_geospatial.h