Updated to support named jack servers with -s cmd-line option

Hi Nick,

I based this on the way that named servers are handled in the jack_lsp source. I have tested it on my machine with both named and unnamed (i.e. the way it worked before) jackd servers and it works in both cases.

I'm up & using it on our streaming webserver (linked from http://wxdu.org ) so I'm happy either way, but here's the patch if you want to merge it.

Cheers,

Ross Grady