disable building TestGtkEmbed when tests are disabled. rs=bsmedberg

embedding/browser/gtk/Makefile.in

@@ -44,7 +44,11 @@ VPATH		= @srcdir@
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= gtkembedmoz
-DIRS=src tests
+DIRS=src
+
+ifdef ENABLE_TESTS
+DIRS  += tests
+endif
 
 PACKAGE_FILE = gtkembed.pkg