fuzz: always define LLVMFuzzerInitialize() even if we don't need it This will make it easier to test our fuzzers outside oss-fuzz. Differential Revision: https://phab.mercurial-scm.org/D7560

fuzz: remove debug prints from revlog_corpus.py Differential Revision: https://phab.mercurial-scm.org/D7559

fuzz: fix an unused result on getcwd() in pyutil clang was rightly complaining about this, so let's just fix it. Differential Revision: https://phab.mercurial-scm.org/D7558

upgraderepo: add a config option for parallel computation The option is put to use to compute new copy tracing side data in parallel. It use the multiprocessing module as it had the appropriate primitive for what we needed. Gregory Szorc had concerned on windows so we disabled it there. See inline comment for details on the parallel implementation.

upgrade-repo: colorize some of the output Having clear color for requirement added and removed is useful.

tests: remove hardcoded errno values Fixes test failures on hurd-i386 Ref: https://bugs.debian.org/946178 Differential Revision: https://phab.mercurial-scm.org/D7556

tests: expect return status 255 on exception for test-blackbox.t with chg Differential Revision: https://phab.mercurial-scm.org/D7554

tests: fix command name in test-blackbox.t to be bytes This command is only used when tests are run with --with-chg, so this was missed before. Differential Revision: https://phab.mercurial-scm.org/D7553

tests: fix deprecation warning about regex flags not at beginning of expr This may only show up when running the tests under python3.6+. Currently the only test that does this is test-patchbomb-tls.t, and it only uses (?i), so that's all that's handled at the moment. Differential Revision: https://phab.mercurial-scm.org/D7552

tests: fix test-chg.t to work with py3 (no setprocname) Differential Revision: https://phab.mercurial-scm.org/D7551