localrepo: do not update bookmarks in addchangegroup

We want to update the current bookmark to the most recent revision on
current branch unless there is a remote bookmark that points to
a different descendant. Addchangegroup is called before we can check for
remote bookmarks.

We don't update the bookmark in addchangegroup anymore to allow proper updating
of bookmarks in pull.

mercurial/localrepo.py

@@ -1894,10 +1894,6 b' class localrepository(repo.repository):'
                 self.hook("incoming", node=hex(cl.node(i)),
                           source=srctype, url=url)
 
-        # FIXME - why does this care about tip?
-        if newheads == oldheads:
-            bookmarks.update(self, self.dirstate.parents(), self['tip'].node())
-
         # never return 0 here:
         if newheads < oldheads:
             return newheads - oldheads - 1

tests/test-bookmarks-pushpull.t

@@ -26,6 +26,7 b' import bookmark by name'
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
+  updating bookmark Y
   (run 'hg update' to get a working copy)
   $ hg bookmarks
      Y                         0:4e3505fd9583