Switch GCSRS_CVSID to standard CPL_CVSID (#5414)

git-svn-id: https://svn.osgeo.org/gdal/branches/1.11@27717 f0d54148-0727-0410-94bb-9a71ac55c965
poDS_ unused (#5414)

git-svn-id: https://svn.osgeo.org/gdal/branches/1.11@27718 f0d54148-0727-0410-94bb-9a71ac55c965