Divided schema paths in two:  dirname and basename, to be used with the schema environment variable.  The dirname could be the hardcoded one starting with @prefix@ or the environment variable value (TINYOWS_SCHEMA_DIR).
Divided schema paths in two:  dirname and basename, to be used with the schema environment variable.  The dirname could be the hardcoded one starting with @prefix@ or the environment variable value (TINYOWS_SCHEMA_DIR).

git-svn-id: 14c40574c714c6d6363b785858d5f77a39dd1743@52 5b3c568a-86f9-4a59-a47a-7be284f604b4

peter-kutak/tinyows,peter-kutak/tinyows,mapserver/tinyows,mapserver/tinyows,jewie/tinyows,jewie/tinyows,mapserver/tinyows,jewie/tinyows,peter-kutak/tinyows