fdsink: implement GstBaseSink::query instead of messing with the pad
fdsink: implement GstBaseSink::query instead of messing with the pad

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