* Ignore `>`, `<`, `=` and `!` operators, when they are specified in
the dependencies. This was the desired behavior before, but it was
not implemented correctly (so it wouldn't ignore them everywhere).
Of course the real fix would be to honor these operators like apk
does. But this isn't feasible right now, and it should work for
most, if not all, our use-cases. I have documented this in the wiki
under build internals and if we happen to need correct operator
handling, we should do it then.
Minor other changes:
* `pmbootstrap parse_apkindex`: support optional package parameter to
only show the parsed content for one package.
* Support building most python APKBUILDs by replacing ${pkgname#py-}
properly
