mq: qrepo.add(mq.added) inside save_dirty inside of doing it manually

This should make the MQ API more transparent: callers only have to
call save_dirty, and no mq.added magic or knowledge is required.

hgext/mq.py

@@ -476,6 +476,11 b' class queue(object):'
             write_list(self.full_series, self.series_path)
         if self.guards_dirty:
             write_list(self.active_guards, self.guards_path)
+        if self.added:
+            qrepo = self.qrepo()
+            if qrepo:
+                qrepo[None].add(self.added)
+            self.added = []
 
     def removeundo(self, repo):
         undo = repo.sjoin('undo')
@@ -1809,10 +1814,6 b' def qimport(ui, repo, *filename, **opts)'
               git=opts['git'])
     finally:
         q.save_dirty()
-        qrepo = q.qrepo()
-        if qrepo:
-            qrepo[None].add(q.added)
-        q.added = []
 
     if opts.get('push') and not opts.get('rev'):
         return q.push(repo, None)

hgext/rebase.py

@@ -366,10 +366,6 b' def updatemq(repo, state, skipped, **opt'
                 mq.qimport(repo, (), patchname=name, git=isgit,
                                 rev=[str(state[rev])])
         mq.save_dirty()
-        qrepo = mq.qrepo()
-        if qrepo:
-            qrepo[None].add(mq.added)
-        mq.added = []
 
 def storestatus(repo, originalwd, target, state, collapse, keep, keepbranches,
                                                                 external):