Properly encode raster/rt_pg dependencies

Fixes #3335 for me (in 2.3.0dev) git-svn-id: http://svn.osgeo.org/postgis/trunk@14284 b70326c6-7e19-0410-871a-916f4a2858ee

Author: Sandro Santilli

raster/rt_pg/Makefile.in

@@ -103,6 +103,15 @@ endif
 $(PERL) -lpe "s'MODULE_PATHNAME'\$$libdir/rtpostgis-@POSTGIS_MAJOR_VERSION@.@POSTGIS_MINOR_VERSION@'g" > $@
 
 
+../../liblwgeom/.libs/liblwgeom.a:
+$(MAKE) -C ../../liblwgeom
+
+../rt_core/librtcore.a:
+$(MAKE) -C ../rt_core
+
+../../libpgcommon/libpgcommon.a:
+$(MAKE) -C ../../libpgcommon
+
 # Objects dependencies
 # NOTE: the .a deps are really only link-time dependencies, but at this
 # time I dunno how to wncode those