mq: add checkunfinished support (issue3955)

hgext/mq.py

@@ -976,6 +976,7 b' class queue(object):'
             raise util.Abort(_("local changes found"))
 
     def checklocalchanges(self, repo, force=False, refresh=True):
+        cmdutil.checkunfinished(repo)
         m, a, r, d = repo.status()[:4]
         if (m or a or r or d) and not force:
             self.localchangesfound(refresh)