Added a patch to fix a build failure with musl (cherry-picked from
upstream).
The new release doesn't any more install the smixer modules when Python
support is disabled. The modules weren't usable without Python support
before either, so this change does not constitute a loss of
functionality [1].
alsa-lib-dev has automatic dependencies on alsa-lib and libasound, but
since the smixer modules were the only thing in the alsa-lib package,
the alsa-lib package doesn't get generated any more. alsa-lib-dev still
has an automatic dependency on alsa-lib, however, so I had to override
the RDEPENDS of alsa-lib-dev to only include libasound.
