change the order about full_renderer and small_renderer to make small_renderer show normally
fix bug #115 use System.exit(0) to release resource in onDestory()
fix bug #102 the way to unpublish in P2P will lead crush after serveral times publish and unpublish, so change it to another way
fix bug #94 use cyclicBarrier to avoid use info() when conferenceInfo is null
change the order about full_renderer and small_renderer to make small_renderer show normally
fix bug #115 use System.exit(0) to release resource in onDestory() fix bug #102 the way to unpublish in P2P will lead crush after serveral times publish and unpublish, so change it to another way
fix bug #94 use cyclicBarrier to avoid use info() when conferenceInfo is null