basesrc: Return values in stream time for the POSITION query
basesrc: Return values in stream time for the POSITION query

Fixes bug #623622.

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