Drop the .c suffix of sql files to preprocess under raster/ dir

git-svn-id: http://svn.osgeo.org/postgis/trunk@11179 b70326c6-7e19-0410-871a-916f4a2858ee
Drop the .c suffix of sql files to preprocess under topology/ dir

git-svn-id: http://svn.osgeo.org/postgis/trunk@11180 b70326c6-7e19-0410-871a-916f4a2858ee
Move GML function under a new export/ subdir

git-svn-id: http://svn.osgeo.org/postgis/trunk@11181 b70326c6-7e19-0410-871a-916f4a2858ee