test: split tests/test-merge-combination.t into multiple parts That test is quite slow, lets split it in smaller bits. Differential Revision: https://phab.mercurial-scm.org/D9768

test: extract the `genmerges` out of test-merge-combination.t This open the way to splitting this slow test in multiple ones. Differential Revision: https://phab.mercurial-scm.org/D9767

hghave: clarify `sqlite` requirements We need more than the python module, we also need the sqlite3 command line. Differential Revision: https://phab.mercurial-scm.org/D9787

localrepo: fix comment typo Differential Revision: https://phab.mercurial-scm.org/D9782

error: use detailed exit code 10 for command errors Command errors (unknown or ambiguous commands, or bad command arguments or options) are handled in the `dispatch` module. Most other errors are handled in the `scmutil` module. This patch therefore has to duplicate a little bit of code from the `scmutil` module. It's just a few lines, however, so it seems fine to me. It's a pretty common category of errors, so it's important to have them respect `ui.detailed-exit-code`. Differential Revision: https://phab.mercurial-scm.org/D9777

errors: raise InputError when non-existent help section requested Differential Revision: https://phab.mercurial-scm.org/D9776

revlog: migrate from PyEval_CallObject to PyObject_Call The former was deprecated in 3.9.0. Differential Revision: https://phab.mercurial-scm.org/D9791

fuzz: fix Makefile default PYTHON_CONFIG_FLAGS to be modern This is actually what we already do on oss-fuzz, so it's more correct as tests go. Differential Revision: https://phab.mercurial-scm.org/D9790