librsvg: enable back svg support in gdk-pixbuf
librsvg: enable back svg support in gdk-pixbuf

atsushieno/cerbero,nirbheek/cerbero,atsushieno/cerbero,atsushieno/cerbero,GStreamer/cerbero,atsushieno/cerbero,nirbheek/cerbero,nirbheek/cerbero,atsushieno/cerbero,GStreamer/cerbero,GStreamer/cerbero,nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero