Merge remote-tracking branch \'weave/master\' into \'weave/aosp-master\' am: e851e48e0f
am: 3bf4b9dabc
* commit '3bf4b9dabce3e89c5d5830c41c1349c65c8effc8':
Periodicly clean up command queue and remove old processed commands
Changed meaning of some SSID flags
Rename CommandQueue::DelayedRemove into RemoveLater()
Fix memory leak when removing CommandInstance from CommandQueue
Add a unit tests for deleting CloudCommandProxy along with CommandInstance
Add libevent-dev to README.
Make default Makefile target "all".
Replace bleeding-edge libevent with libevhtp.
Remove crypto type "None"
