(AIX) backport of master rpm_spec
(AIX) Fix up backported rpm_spec for 2.7.x
(AIX) Add option tests for various crusty RPMs

Prior to this commit, we had no tests for the changing behaviour based
on version of RPM release. This commit add tests for magical old
versions of RPM, like that on AIX, 3.0.5 aka before the time began.

Sprintly: fixes item:195