Changed jacko opcode to use pthreads condition variables instead of mutexes, and to spawn a separate thread to handle shutdown outside of the porcess callback.
Changed jacko opcode to use pthreads condition variables instead of mutexes,
and to spawn a separate thread to handle shutdown outside of the porcess callback.

csound/csound,csound/csound,csound/csound,ketchupok/csound,csound/csound,ketchupok/csound,csound/csound,csound/csound,csound/csound,ketchupok/csound,ketchupok/csound,csound/csound,ketchupok/csound,ketchupok/csound,ketchupok/csound,csound/csound,csound/csound,ketchupok/csound,ketchupok/csound,ketchupok/csound