Kill the "using independent target" warning.

It never helped to catch a real problem, but consistently annoys users.


[SVN r29612]

tools/build

@@ -1 +1 @@
-Subproject commit 46f28253001dfda31122e5cf9ccf93695b444070
+Subproject commit 6a074a1c8128ab97768c2610f8d28bd1c18ae7be