Bug 534694 - Fix building layout-debug with libxul. r=dbaron sr=jst CLOSED TREE

extensions/layout-debug/src/Makefile.in

@@ -47,7 +47,8 @@ LIBRARY_NAME	= gkdebug
 EXPORT_LIBRARY	= 1
 IS_COMPONENT	= 1
 MODULE_NAME	= nsLayoutDebugModule
-LIBXUL_LIBRARY = 1
+LIBXUL_LIBRARY	= 1
+GRE_MODULE	= 1
 
 
 XPIDLSRCS	= \