pulse: Require the (as yet unreleased) PulseAudio 0.9.21 which will contain our required changes
pulse: Require the (as yet unreleased) PulseAudio 0.9.21 which will contain our required changes

NB If this version is not found, PulseAudio support will not be compiled,
but build will continue as before.

KDE/phonon-waveout,KDE/phonon-gstreamer,KDE/phonon-mmf,shadeslayer/phonon-gstreamer,KDE/phonon-xine,shadeslayer/phonon-gstreamer,KDE/phonon-directshow,KDE/phonon-xine,KDE/phonon-directshow,KDE/phonon-xine,KDE/phonon-quicktime,shadeslayer/phonon-gstreamer,KDE/phonon-gstreamer