split CI tests for better feedback and to avoid timeouts

See merge request pub/open-source-case-studies!26

add git pre-commit hook to prevent mistakes

See merge request pub/open-source-case-studies!27

Consider running 'git config core.hooksPath .githooks' in your OSCS clone
to enable it.

Sync with frama-c master after MR !3660 and !3698

See merge request pub/open-source-case-studies!25

Also avoids a failure on a recursive function without specification
(function factorial in file 00168.c).

Adds annotations to disable partitioning in file 00040.c to avoid combinatorial
explosion.