Reduced number of sender threads to 1; minor cleanup
Fixed a bug that caused lots of unnecessary mouse location updates to be sent (while not moving the mouse)
Traffic optimization that causes block updates to be held back, they're sent either when the block's content stops changing, or after a timeout (currently set to 10 screen sampling intervals, see DIRTY_COUNT_LIMIT)
Merge remote-tracking branch 'rsippl/deskshare-optimizations'
 - add js api to query if user is publishing cam or not
 - add sample how to query if user is publishing cam or not
Merge branch 'master' of git://github.com/bigbluebutton/bigbluebutton
 - preview or view webcam when switching presenter
 - add example on how to handle preview and view webcam stream when switching presenter
Merge branch 'master' of github.com:bigbluebutton/bigbluebutton
 - add API to tell that SWF is ready for external interface calls
Merge branch 'master' of https://github.com/bigbluebutton/bigbluebutton
added scaled values for region capture
latest change for fix deskshare
Merge remote branch 'upstream/master' into improve-whiteboard-toolbar