ST_Project add version of PostGIS this was introduced

git-svn-id: http://svn.osgeo.org/postgis/branches/2.0@11041 b70326c6-7e19-0410-871a-916f4a2858ee
clarify distance is in meters in the short-descrip that shows in db environment

git-svn-id: http://svn.osgeo.org/postgis/branches/2.0@11042 b70326c6-7e19-0410-871a-916f4a2858ee
link happiness -- add ref to postgresql math functions so people aren't puzzled by degrees, pi, radians where they came from

git-svn-id: http://svn.osgeo.org/postgis/branches/2.0@11045 b70326c6-7e19-0410-871a-916f4a2858ee