Clean up some signed vs. unsigned comparisons in libcap.

Suggestion from Mark Wielaard @ Redhat and, more recently from Akhil Arora @ Intel.

Signed-off-by: Andrew G Morgan <morgan@kernel.org>
Add support for power-pc build.

Patch contributed by Ivan Kabaivanov.

Signed-off-by: Andrew G Morgan <morgan@kernel.org>
Stop using ping to test privilege use.

It appears that ping has been modified to hard-code non-file-capability
acquired privilege use. That is, it requires PR_SET_KEEPCAPS (a legacy
supporting secure bit) to function in order for ping to work. As such, we
can't rely on it for quicktest.sh. Instead, we use a copy of capsh
enhanced with file-caps for our test cases.

Thanks to Serge Hallyn @ Ubuntu for figuring out what broke.

Signed-off-by: Andrew G Morgan <morgan@kernel.org>
Prepare for a release tag.

Signed-off-by: Andrew G Morgan <morgan@kernel.org>