There are numerous checks that don't make much sense to report for deprecated
API, so skip those. This also required updating a few .ignore and .todo files.
* Not every old annotations have been migrated (work in progress, to be completed in another PR);
* Sanitation of the data files (e.g. removal of dupes and fixed, by Apple, entries) is done, but not automated (also a work in progress)
Even then this is immediately useful, i.e. better merged before 15.6 gets branched.
Rolf Bjarne Kvinge
Manuel de la Pena
Sebastien Pouliot