Added support for specifying input sample rate on the command line

--samplerate n or -r n where n = sample rate in Hz
Chris Roberts <chris@naxxfish.eu>
Completed adding samplerate support

This time with 100% less syntax errors (oops)
Added support for -aj/--autojack to disable Jack autoconnection

So that you don't have OpenOB automatically connect to the first available source or sink