This gets rid of the patch for newer pulseaudio library versions.
In addition, we now have protobuf and pciutils in default dependencies, as those
are required (or better: optional, but recommended and thus activated by the
default gyp options) by versions >= 25.
Also, we now no longer depend on libpng, but I'm not dropping this, as we want
to get back to libpng from nixpkgs again 'real soon'.
The stack-protector flag is now disabled by default accross all versions, and
probably didn't hurt back in version 24, but at least we're now no longer add it
dependant on a particular version.
And those pesky post/onlyXX version booleans are now pre/postXX, to ensure
better clarity.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
3423ea9e7b