prepush: show details about new remote heads with --verbose

previously, this info was only shown with --debug

Note that the new remote heads are only shown if the command aborts,
that is, they are *not* shown if --force was specified.

See also change 91cb08a9e7fb.

mercurial/discovery.py

@@ -173,9 +173,9 b' def prepush(repo, remote, force, revs, n'
                     else:
                         hint = _("did you forget to merge? "
                                  "use push -f to force")
-                repo.ui.debug("new remote heads on branch '%s'\n" % branch)
+                repo.ui.note("new remote heads on branch '%s'\n" % branch)
                 for h in dhs:
-                    repo.ui.debug("new remote head %s\n" % short(h))
+                    repo.ui.note("new remote head %s\n" % short(h))
         if error:
             raise util.Abort(error, hint=hint)
 

tests/test-push-warn.t

@@ -124,16 +124,22 b''
   (did you forget to merge? use push -f to force)
   [255]
 
-  $ hg push -r 3 -r 4 ../c
+  $ hg push -v -r 3 -r 4 ../c
   pushing to ../c
   searching for changes
+  all remote heads known locally
+  new remote heads on branch 'default'
+  new remote head a5dda829a167
+  new remote head ee8fbc7a0295
   abort: push creates new remote head a5dda829a167!
   (did you forget to merge? use push -f to force)
   [255]
 
-  $ hg push -f -r 3 -r 4 ../c
+  $ hg push -v -f -r 3 -r 4 ../c
   pushing to ../c
   searching for changes
+  all remote heads known locally
+  2 changesets found
   adding changesets
   adding manifests
   adding file changes