an antediluvian comment hinted at some weird behavior of gcc and
MSVC at that time, but gcc is now fully ISO compliant in this respect
Waiting for complaints against the MSVC machdep to see whether special
case is warranted there.

Use same pattern as in metrics_acsl.ml.

The final computation state [Computed] or [Aborted] is set by [compute_function],
before calling the function [post_analysis] of domains, as those may use
plugins that use Eva results.

Removes optional argument [access] from [as_zone].