[PATCH v3 0/6] libbsd: Create some basic buildsets.

[Christian Mauderer]

I noted some problem with freebsd-to-rtems.py with the approach I used
for testing for INET6 in the minimal config. So I changed that to
include that into the general rtems-bsd-user-space.h. That has the
advantage that it's not that easy to forget to look whether INET6 is
used in some header.

I'm confident that this is the final version of the patches.