Save an absolute path in repo.path

This should keep things working if the process changes directories
after creating a repo object.

mercurial/localrepo.py

@@ -33,8 +33,8 b' class localrepository(repo.repository):'
                                            " here (.hg not found)"))
             path = p
 
-        self.path = os.path.join(path, ".hg")
         self.root = os.path.realpath(path)
+        self.path = os.path.join(self.root, ".hg")
         self.origroot = path
         self.opener = util.opener(self.path)
         self.wopener = util.opener(self.root)