remote-hg: add support for tag objects

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/remote-helpers/git-remote-hg

@@ -722,7 +722,7 @@ def parse_tag(parser):
     data = parser.get_data()
     parser.next()
 
-    # nothing to do
+    parsed_tags[name] = (tagger, data)
 
 def do_export(parser):
     global parsed_refs, bmarks, peer
@@ -758,9 +758,11 @@ def do_export(parser):
             continue
         elif ref.startswith('refs/tags/'):
             tag = ref[len('refs/tags/'):]
+            author, msg = parsed_tags.get(tag, (None, None))
             if mode == 'git':
-                msg = 'Added tag %s for changeset %s' % (tag, hghex(node[:6]));
-                parser.repo.tag([tag], node, msg, False, None, {})
+                if not msg:
+                    msg = 'Added tag %s for changeset %s' % (tag, hghex(node[:6]));
+                parser.repo.tag([tag], node, msg, False, author[0], {})
             else:
                 parser.repo.tag([tag], node, None, True, None, {})
             print "ok %s" % ref
@@ -815,6 +817,7 @@ def main(args):
     global marks, blob_marks, parsed_refs
     global peer, mode, bad_mail, bad_name
     global track_branches, force_push, is_tmp
+    global parsed_tags
 
     alias = args[1]
     url = args[2]
@@ -857,6 +860,7 @@ def main(args):
     blob_marks = {}
     parsed_refs = {}
     marks = None
+    parsed_tags = {}
 
     repo = get_repo(url, alias)
     prefix = 'refs/hg/%s' % alias