Rewrite pg_freespacemap to match the new FSM implementation. I missed these

changes from the main FSM commit for some reason.

contrib/pg_freespacemap/Makefile

-# $PostgreSQL: pgsql/contrib/pg_freespacemap/Makefile,v 1.4 2007/11/10 23:59:51 momjian Exp $
+# $PostgreSQL: pgsql/contrib/pg_freespacemap/Makefile,v 1.5 2008/09/30 11:17:07 heikki Exp $
 
 MODULE_big = pg_freespacemap
 OBJS	= pg_freespacemap.o

contrib/pg_freespacemap/pg_freespacemap.sql.in

-/* $PostgreSQL: pgsql/contrib/pg_freespacemap/pg_freespacemap.sql.in,v 1.9 2008/09/30 10:52:09 heikki Exp $ */
+/* $PostgreSQL: pgsql/contrib/pg_freespacemap/pg_freespacemap.sql.in,v 1.10 2008/09/30 11:17:07 heikki Exp $ */
 
 -- Adjust this setting to control where the objects get created.
 SET search_path = public;

contrib/pg_freespacemap/uninstall_pg_freespacemap.sql

-/* $PostgreSQL: pgsql/contrib/pg_freespacemap/uninstall_pg_freespacemap.sql,v 1.3 2007/11/13 04:24:28 momjian Exp $ */
+/* $PostgreSQL: pgsql/contrib/pg_freespacemap/uninstall_pg_freespacemap.sql,v 1.4 2008/09/30 11:17:07 heikki Exp $ */
 
 -- Adjust this setting to control where the objects get dropped.
 SET search_path = public;