gst: make sure gobject-introspection scanner calls gst_init()
gst: make sure gobject-introspection scanner calls gst_init()

https://bugzilla.gnome.org/show_bug.cgi?id=647922

centricular/gstreamer,cablelabs/gstreamer,mparis/gstreamer,collects/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,magcius/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,drothlis/gstreamer,ensonic/gstreamer,centricular/gstreamer,ylatuya/gstreamer,mparis/gstreamer,surround-io/gstreamer,krichter722/gstreamer,drothlis/gstreamer,cfoch/gstreamer,Distrotech/gstreamer,jpakkane/gstreamer,Distrotech/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,mparis/gstreamer,ensonic/gstreamer,StreamUtils/gstreamer,magcius/gstreamer,StreamUtils/gstreamer,Distrotech/gstreamer,StreamUtils/gstreamer,jpakkane/gstreamer,Distrotech/gstreamer,drothlis/gstreamer,Lachann/gstreamer,justinjoy/gstreamer,collects/gstreamer,StreamUtils/gstreamer,ylatuya/gstreamer,surround-io/gstreamer,cfoch/gstreamer,krieger-od/gstreamer,ylatuya/gstreamer,krichter722/gstreamer,lovebug356/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,jpxiong/gstreamer,krieger-od/gstreamer,jpakkane/gstreamer,krieger-od/gstreamer,jpxiong/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,magcius/gstreamer,ensonic/gstreamer,krichter722/gstreamer,Lachann/gstreamer,krichter722/gstreamer,collects/gstreamer,jpxiong/gstreamer,krieger-od/gstreamer,justinjoy/gstreamer,lubosz/gstreamer,lubosz/gstreamer,shelsonjava/gstreamer,lovebug356/gstreamer,surround-io/gstreamer,justinjoy/gstreamer,cfoch/gstreamer,StreamUtils/gstreamer,magcius/gstreamer,ensonic/gstreamer,magcius/gstreamer,mparis/gstreamer,lovebug356/gstreamer,ylatuya/gstreamer,cablelabs/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,collects/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,shelsonjava/gstreamer,lubosz/gstreamer,centricular/gstreamer,drothlis/gstreamer,ahmedammar/platform_external_gst_gstreamer,ensonic/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,surround-io/gstreamer,drothlis/gstreamer,Lachann/gstreamer,lubosz/gstreamer,lubosz/gstreamer,ahmedammar/platform_external_gst_gstreamer,ahmedammar/platform_external_gst_gstreamer,collects/gstreamer,shelsonjava/gstreamer,Lachann/gstreamer,ylatuya/gstreamer,centricular/gstreamer,cfoch/gstreamer,jpxiong/gstreamer,mparis/gstreamer,Distrotech/gstreamer,surround-io/gstreamer