Stops all receive streams (same reasoning as in the previous commit for starting them).
Stops all receive streams (same reasoning as in the previous commit for starting them).

jamesbond12/libjitsi,jamesbond12/libjitsi,bebo/libjitsi,agh1467/libjitsi,ITNano/libjitsi,HappyYang/libjitsi,bgrozev/libjitsi,jitsi/libjitsi,bgrozev/libjitsi,bebo/libjitsi,gpolitis/libjitsi,gpolitis/libjitsi,stokito/libjnvpx,jamesbond12/libjitsi,ITNano/libjitsi,innerverse/libjitsi,agh1467/libjitsi,innerverse/libjitsi,jitsi/libjitsi,jitsi/libjitsi,draekko/libjitsi,jitsi/libjitsi,HappyYang/libjitsi,HappyYang/libjitsi,ITNano/libjitsi,bgrozev/libjitsi,stokito/libjnvpx,draekko/libjitsi,agh1467/libjitsi,innerverse/libjitsi,draekko/libjitsi,bebo/libjitsi,gpolitis/libjitsi