dirstate: fix generator/list error when using python 2.7

util.statfiles returns a generator on python 2.7 with c extensions disabled.
This caused util.statfiles(...) [0] to break in tests. Since we're only
stat'ing one file, I just changed it to call lstat directly.

mercurial/dirstate.py

@@ -703,7 +703,11 b' class dirstate(object):'
                     # Report ignored items in the dmap as long as they are not
                     # under a symlink directory.
                     if ignore(nf) and audit_path.check(nf):
-                        results[nf] = util.statfiles([join(nf)])[0]
+                        try:
+                            results[nf] = lstat(join(nf))
+                        except OSError:
+                            # file doesn't exist
+                            results[nf] = None
                     else:
                         # It's either missing or under a symlink directory
                         results[nf] = None