tests/test-abort-checkin.t

merge: move dr/rd warning messages out of applyupdates()

As preparation for making 'dr' and 'rd' actions no longer actions,
move the reporting from applyupdates() to its caller update(). This
way we won't have to pass additonal arguments to applyupdates() when
they are no longer actions. Also, the warnings are equally unrelated
to applyupdates() as they are to recordupdates(), as they don't result
in any changes to either the working copy or the dirstate.

See earlier patch for additional motivation.

  $ cat > abortcommit.py <<EOF
  > from mercurial import util
  > def hook(**args):
  >     raise util.Abort("no commits allowed")
  > def reposetup(ui, repo):
  >     repo.ui.setconfig("hooks", "pretxncommit.nocommits", hook)
  > EOF
  $ abspath=`pwd`/abortcommit.py

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > mq =
  > abortcommit = $abspath
  > EOF

  $ hg init foo
  $ cd foo
  $ echo foo > foo
  $ hg add foo

mq may keep a reference to the repository so __del__ will not be
called and .hg/journal.dirstate will not be deleted:

  $ hg ci -m foo
  error: pretxncommit.nocommits hook failed: no commits allowed
  transaction abort!
  rollback completed
  abort: no commits allowed
  [255]
  $ hg ci -m foo
  error: pretxncommit.nocommits hook failed: no commits allowed
  transaction abort!
  rollback completed
  abort: no commits allowed
  [255]

  $ cd ..