Add the pipeline to the thread after autoplugging.
Add the pipeline to the thread after autoplugging.

Original commit message from CVS:
Add the pipeline to the thread after autoplugging.

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