tests/test-revert-flags.t

add: replace match.bad() monkey patching with match.badmatch()

The previous code didn't restore the original method, but it looks like the
worst that would happen is junk added to a list that had already been processed
by previous subrepo invocation(s).

#require execbit

  $ hg init repo
  $ cd repo
  $ echo foo > foo
  $ chmod 644 foo
  $ hg ci -qAm '644'

  $ chmod 755 foo
  $ hg ci -qAm '755'

reverting to rev 0

  $ hg revert -a -r 0
  reverting foo
  $ hg st
  M foo
  $ hg diff --git
  diff --git a/foo b/foo
  old mode 100755
  new mode 100644

  $ cd ..