Revise DejaGnu patch submission guidelines.

MAINTAINERS

@@ -34,12 +34,12 @@ readline/support/config.sub; readline/support/config.guess
 		[email protected]
 
 dejagnu/
-	Send all patches to:
-	http://www.gnu.org/software/dejagnu/
-	mail:[email protected]
-	For changes to the local repostory, send them to
-	[email protected] when generic; and sid@,
-	binutils@, gcc@, etc. for sub-components.
+	dejagnu: http://www.gnu.org/software/dejagnu/
+	Patches to bug-dejagnu@gnu.org
+	Avoid making changes to the local repository; please send
+	patches upstream.  Important and approved patches can be
+	checked into the src repository, otheriwse patches will be
+	imported from the next release.
 
 gdb/; mmalloc/; readline/; sim/; GDB's part of include/ & dejagnu/
 	gdb: http://sources.redhat.com/gdb/