Update libtoxcore and qtox to the newest dev version

As from now qtox depends on openalSoft instead of openal. This is due to
incompatibilities between those to two implementations. Anyway, this
should be okay because their official debian package depends on
openalSoft as well.
toxic: Update to the newest dev version

This update is necessary due to API changes in libtoxcore. Sad to say that
the recent stable version doesn't work with our libtoxcore. We need to
update to the recent dev version.
utox: Update to the newest dev version

This update is necessary due to API changes in libtoxcore.
tox-prpl: Update to the newest dev version

This update is necessary due to API changes in libtoxcore.
qtox: Fix installPhase
Merge pull request #5217 from geerds/tox

Tox: Update libtoxcore, qtox, utox and toxic