[PATCH 1 of 6] dirstate.walk: maintain a list of dirs not found

[Siddharth Agarwal]

# HG changeset patch
# User Siddharth Agarwal <sid0 at fb.com>
# Date 1367944183 25200
#      Tue May 07 09:29:43 2013 -0700
# Node ID 869ee5ce0194c7b931d18754ff044f395a249984
# Parent  b7ceaf830c5b6b3034200d27ed7af272757e7c1f
dirstate.walk: maintain a list of dirs not found

Upcoming patches will factor out the walk over explicit files done in step 1.
This helps us get there.

diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -607,6 +607,7 @@
         results['.hg'] = None
 
         # step 1: find all explicit files
+        dirsnotfound = []
         for ff in files:
             if normalize:
                 nf = normalize(normpath(ff), False, True)
@@ -642,6 +643,7 @@
                         if fn.startswith(prefix):
                             if matchedir:
                                 matchedir(nf)
+                            dirsnotfound.append(nf)
                             skipstep3 = False
                             break
                     else: