* 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.
* [xtro-sharpie] Build with msbuild and be as quiet as requested when building.
* [xtro-sharpie] Must run as a 64-bit process, since the required native libraries are 64-bit.
* [xtro-sharpie] Add run configurations to the project file to ease debugging in the IDE.
* [xtro-sharpie] Remove xtro-plugin and the related commands.
This was needed when there wasn't a 64-bit mono, in order to run xtro-sharpie
in a 64-bit process.
Now there is a 64-bit mono, so it's not needed anymore.
Also improve makefile targets a bit, to auto-build stuff when needed, by
setting the right dependencies.