revert: drop dead code for untracked files Untracked files are handled through status now.

revert: handle unknown files through status This will allow us to drop the code dedicated to this special case.

revert: drop more dead code Now that we detect all clean files, we do not need this clause anymore.

revert: add a message to noop action This prepares for the arrival of a second "not touching file" action: revert of an untracked file.

revert: simplify loop conditional The two breaks can be joined into one. The code gains one level of indent.

revert: explode the action tuple in the for loop noop is about to gain a message.

revert: use actions[...] in all disptable cases 1. Special cases are not special enough 2. There are two cases where nothing is done and a message is displayed. This prepares it.

revset: factorize backup decision The conditional controlling the creation of backup is fairly big. We move config related decisions outside of the loop.

revert: use a flat dispatch table Now that the table is simpler, remove one level of depth from it. This simplifies its usage in the for loop.

pushbookmark: do not attempt to update bookmarks if the push failed (BC) Before this patch, there was always an attempt to update bookmark even if prior steps of the push failed. I cannot see a good semantic reason to do so. We disable this possibility to simplify the push flow with bundle2. Bookmarks will be included in the bundle and fail with other steps.