Since this test is supposed to check the order in which globals are presented
after AST reordering, such oracle changes must be considered carefully. Here,
there's no dependency between `j` and `k`, so that they can indeed be swapped.
This in fact better reflect the original global list before reordering

NB: `l` is always at the very top of the list, despite being inserted last. This
might warrant investigation at some point. However, the resulting AST after
reordering is correct, which is the main goal.

Avoid warning about missing proto during typechecking.
Also changes a warning into an error, and improves the error message.

- Fix Value/Value#5
- Fix Value/Value#14

Some case studies (e.g. dyad) use some ugly casts from fd_set_t which lead
to the analysis stopping too early.
Changing the representation of fd_set_t should also help it better conform to
the standard (since a fd_set_t should be able to hold FD_SETSIZE elements).

[Ptests] preserve LOG after STDOPT directive

See merge request frama-c/frama-c!2073

This is absolutely not a sneaky attempt to relaunch a build (now that OCI seems
in better shape) pushing a nearly empty commit.