Some packages in aports have their own subpackages in their
dependencies, for some reason. This causes our resolver to assume there
is a cyclical dependency.
Adjust the resolver to safely ignore these dependencies, since they'll
be built as a part of the package that depends on them.
For example, modemmanager depends on libmm-glib which is a subpackage of
modemmanager. Currently to build modemmanager in pmaports it would be
necessary to manually modify the APKBUILD after copying it from aports.
This change avoids that.
