ALLJOYN-2517 Thread-unsafe increment in callback  SignalHandler()  in  bbservice.cc

Remove unused variable based on feedback from code review.

Change-Id: I7a52d4caf922b85bc8e4773d40525e214e072b50
MBUS-2444: remove execute bit from source files
AJCORE-8 IPNS disable_directed_broadcast parameter is not honored.