allow copy of mapnik::projection when proj_transform is created - closes #658 - TODO - consider using shared_ptr
allow copy of mapnik::projection when proj_transform is created - closes #658 - TODO - consider using shared_ptr

git-svn-id: 5adfda8227e14e59fd47d5bd9925a30df16fed74@2774 d397654b-2ff0-0310-9e29-ba003691a0f9

makinacorpus/mapnik2,makinacorpus/mapnik2,makinacorpus/mapnik2,makinacorpus/mapnik2