libffi: Update to 3.0.13.

Create compat package because of soname bump.
gc: New package.

A garbage collector for C and C++.
guile: Update to 2.0.9.
iscsi-initiator-util: Update patchset.

Import latest changes from Fedora. Link against kmod
and fix various smaller problems.
Merge branch 'master' of ssh://git.ipfire.org/pub/git/ipfire-3.x