Replace PHONON_GST_SUBTITLE_FONT by PHONON_SUBTITLE_FONT to use it in different backends
Replace PHONON_GST_SUBTITLE_FONT by PHONON_SUBTITLE_FONT to use it in different backends

shadeslayer/phonon-gstreamer,KDE/phonon-gstreamer,shadeslayer/phonon-gstreamer,KDE/phonon-gstreamer,shadeslayer/phonon-gstreamer