swift234

[sil-aa] Typed Based TBAA with all the necessary fixes.

This commit fixes a bunch of problems I found in TBAA. Some fun
examples:

1. We were not handling protocols correctly.
2. We were not handling enums correctly.
3. We were not handling builtins correctly all the time.
...
And much more.

I also added a fairly exhaustive test.

Additionally I checked the benchmarks and did not see any regressions.

rdar://16651852

Swift SVN r18148