* Test GlobalISel on AArch64 Linux [TCWG-825]

  - Got the existing tests to work on Linux - luckily this only required changes to the tests and not to GlobalISel itself; committed these changes upstream

  - Ran the test-suite with GlobalISel and with the fallback to the old DAG ISel enabled; only 57 object files can be compiled with GlobalISel only, the others need the fallback to the old ISel; also, there are crashes in over 500 of the tests 

* Rewrite llvm-projs in Python [TCWG-833]

  - Rewrote the core functionality of the script and added tests

  - Still have to implement the command line interface

* Handle special cases in AArch64InstrInfo::GetInstSizeInBytes [TCWG-757]

  - Committed upstream

* [AArch64] CMP + label arithmetic not supported [TCWG-710]

  - Committed upstream

* Misc

  - Upstream code review

  - Linaro annual performance review

  - Had a quick look at a hanging check-all in one of the AArch64 buildbots; I identified the hanging test as one of the TSAN tests, but I didn't manage to reproduce the issue locally (since the tests run in parallel, it's possible that there's a subtle interaction between them); I've seen other buildbots (PowerPC) similarly hanging every now and then, but I'm not sure it's the same issue; will keep an eye on it though.

== Plan ==

* 2 weeks off