inputselector: Use the first created pad by default
inputselector: Use the first created pad by default

This guarantees a bit more consistency in which input stream will
be selected by default. It would previously be the first pad on which
an event/buffer/query was received ... which was racy and non-predictable.

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