[dmd-internals] fail_compilation/fail108.d

[Brad Roberts]

It looks like this test is now hanging on every build attempt across at least linux and freebsd.  The auto-tester,
thusly stalls on pretty much every test run (be it mainline or pull request).  I don't have the time right now to do
anything about it, so the tester is kinda dead until that's fixed and I can sweep through the machines killing the failures.

If someone wants to help the most, adding a timeout alarm to d_do_test to kill any test that runs for more than, say, 15
minutes (way way longer than any test currently runs) would be great.

Thanks,
Brad