1. Portage doesn't know anything about files installed in /lib/modules
so, when mixing Portage and Entropy and syncing the two repositories
it can happen to build wrong kernel dependencies. So, use modinfo
to get kernel module version magic and use that as tag. Moreover,
make sure that kernel dependency metadata is added only when really
available.
2. This patch should also make metadata extraction "live-system" independent.
Since package is always extracted (to collect extra metadata required
nowadays), use the extract path in every metadata collection function.
Also check against fake package files provided (ones with no content
inside).
ffd90f21c7