[gcc(refs/users/aoliva/heads/testme)] testsuite: Skip module_cmi_p and related unsupported module test

[Alexandre Oliva]

https://gcc.gnu.org/g:0fdc0acd11dd91b6c59a157877779457082e71e0

commit 0fdc0acd11dd91b6c59a157877779457082e71e0
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Thu Feb 23 10:30:33 2023 -0300

    testsuite: Skip module_cmi_p and related unsupported module test
    
    When a multi-source module is found to be unsupported, we fail
    module_cmi_p and subsequent sources.  Override proc unsupported to
    mark the result in module_do, and test it to skip module_cmp_p and
    subsequent related tests.
    
    
    for  gcc/testsuite/ChangeLog
    
            * g++.dg/modules/modules.exp: Override unsupported to update
            module_do, and test it after dg-test.

Diff: