add support for mapnik2, lxml python bindings, goand matching google mercator as +init=epsg:900913
add support for mapnik2, lxml python bindings, goand matching google mercator as +init=epsg:900913

git-svn-id: 52b2958d923a603b3f48d22aabe6b5bf40478d2a@948 dbea3d40-3153-0410-b551-57805770c6e6

glampr/Cascadenik,mapnik/Cascadenik