We previously dlopen()ed it, but it seems painful to do that
without any real gain, except for possibly not having libudev
in the address space and not having code #ifdefed for Linux.
The latter means that we are a bit more likely to break stuff
for non-Linux systems now if we play with udev, but at least
we don't end up with it silently breaking because of a libudev
The existing function pointers in the struct were renamed and
kept for compat purposes.
Also adjust prepare-release to strip [linux-any] from build-depends