dspserver: tweaked getspectrum processing
added entries to .gitignore
dspserver: trying to semaphore protect bufferevent_write.
dspserver: remove semaphore protection of bufferevent_write
QtRadio: revert to using protocol3
dspserver: still debugging SSL error with multiple thread bufferevent_write
dspserver: set BEV_OPT_THREADSAFE on ssl socket event
QtRadio: revert to non-protocol3.  dspserver: BEV_OPT_THREADSAFE for SSL socket
merged with ssl