Newer hwcap failures

[DJ Delorie]

Florian Weimer <fweimer@redhat.com> writes:
> It's probably a left-over from an earlier non-destructive test in the
> scenarios that are working.

> If so, this is what the postclean flag is for ;-)

To be clearer, I meant, any test that leaves behind an ld.so.cache (or
anything that may affect future tests) should postclean (just in case)
but a test that is sensitive to ld.so.cache should also do a preclean.

This scenario is why I put those features in there.