Corrected "waiting for lock on repository FOO held by BAR" message.

BAR was the error number and not the locker name.
Use repr on BAR, so problems can be detected easier.

mercurial/localrepo.py

@@ -517,8 +517,8 b' class localrepository(repo.repository):'
         except lock.LockHeld, inst:
             if not wait:
                 raise
-            self.ui.warn(_("waiting for lock on %s held by %s\n") %
-                         (desc, inst.args[0]))
+            self.ui.warn(_("waiting for lock on %s held by %r\n") %
+                         (desc, inst.locker))
             # default to 600 seconds timeout
             l = lock.lock(lockname, int(self.ui.config("ui", "timeout", "600")),
                           releasefn, desc=desc)