Extending this cycle by a week and reverting !reinclusion topic

It seems that people are still finding regressions in the topic for
this item in the 2.8-rc3:

 * Another try to improve the ignore mechanism that lets you say
   "this is excluded" and then later say "oh, no, this part (that is
   a subset of the previous part) is not excluded".  This has still
   a known limitation, though.

Known limitations in a new feature are somewhat OK, but I am getting
an impression that this is not nearly complete yet and it needs more
time to be tested before it inflicts pain to the general public.

I've reverted the offending changes from 'master' and will be
tagging an extra -rc (2.8-rc4) early next week, as reverting a topic
this late in the cycle is something I feel uncomfortable with.

Thanks.