localrepo: add a second auditor without file system check

Auditors keeps a cache of audited paths. Therefore we cannot use the same
auditor for working copy and history operation. We create a new one without
file system check for this purposes.

mercurial/localrepo.py

@@ -214,6 +214,8 b' class localrepository(object):'
         self.path = self.wvfs.join(".hg")
         self.origroot = path
         self.auditor = pathutil.pathauditor(self.root, self._checknested)
+        self.nofsauditor = pathutil.pathauditor(self.root, self._checknested,
+                                                realfs=False)
         self.vfs = scmutil.vfs(self.path)
         self.opener = self.vfs
         self.baseui = baseui