Add another small option for the JACK app and JACK_HOOK function. The 'n'

option tells JACK not to start jackd automatically if it is not already
running.  Otherwise, the default is that jackd will get started for you if
it isn't running already.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@98676 65c4cc65-6c06-0410-ace0-fbb531ad65f3