playerendpoint: Emit signal using an external thread
playerendpoint: Emit signal using an external thread

Change-Id: I4093f9a82e5f1400e11c7b4cf64655fb33ee617d

shelsonjava/kms-elements,TribeMedia/kms-elements,Kurento/kms-elements,TribeMedia/kms-elements,TribeMedia/kms-elements,Kurento/kms-elements,shelsonjava/kms-elements,Kurento/kms-elements,shelsonjava/kms-elements