[incremental] Patch: FYI: fix scope lookup callback buglet

[Tom Tromey]

I'm checking this in on the incremental-compiler branch.

We only want to note an anti-depenency at file scope.  This patch adds
the missing check in lookup_name_in_scope.

This fixes a few test suite failures.  We're down to 78 now.

Tom

ChangeLog:
2008-01-14  Tom Tromey  <tromey@redhat.com>

	* c-decl.c (lookup_name_in_scope): Only register anti-dependency
	at file scope.

Index: c-decl.c
===================================================================
--- c-decl.c	(revision 131535)
+++ c-decl.c	(working copy)
@@ -2998,7 +2998,8 @@
 	  c_parser_lookup_callback (name, b->decl, false);
 	return b->decl;
       }
-  c_parser_lookup_callback (name, NULL_TREE, false);
+  if (scope->depth == 1)
+    c_parser_lookup_callback (name, NULL_TREE, false);
   return 0;
 }