added ROOT.ML

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/ZF/ROOT.ML	Tue Mar 07 18:02:11 2006 +0100
@@ -0,0 +1,6 @@
+(*  Title:      HOL/ZF/ROOT.ML
+    ID:         $Id$
+*)
+
+use_thy "MainZF";
+use_thy "Games";