[ACTIVITY] Report for week #11

Hello,

[GNU-796] Stabilize GDB testsuite results in the CI:

- Finished implementing ABE's support for rerunning failed tests using Maxim's idea of leveraging validate_failures.py to determine which tests need to be rerun. Submitted v3 and v4 versions, and committed v4.

- Investigated why tcwg-abet-tested jobs have been failing in the CI. Found out that Jenkins sets a bogus core.hooksPath in the git repo config. Submitted and merged a gerrit request fixing the problem.

- Investigated why cross-build gdbserver needs GMP and MPFR (and is thus failing to build) in tcwg-gnu-build jobs. Submitted Gerrit review request to fix it.

- Started looking into why re-enabling GDB testsuite parallelism makes it run fewer tests.