Bug#954159: pavucontrol: allow multiple instances

[Jonas Schäfer]

I second this request.

Another use-case which cannot be addressed with window manager hacks is 
starting pavucontrol with different PULSE_SERVER environment variables.

My use case is controlling audio servers in the LAN. When routing a stream 
there, I’d typically want to have both my local pavucontrol and a pavucontrol 
with PULSE_SERVER=audioserver for remote controlling open.

Thanks.