Log Message:
Update pavucontrol to 3.0

From coypu@sdf.com with mods by me.

Tue Mar 24 2015:
Version 3.0 released; improved error handling; remember device
selection visibility; window sizing improvements.

Fri Mar 8 2013:
Version 2.0 released.

Tue Sep 27 2011:
Version 1.0 released.

Thu Sep 15 2011:
Version 0.99.2 (v1 RC2) released; digital receiver UI.

Tue Aug 2 2011:
Version 0.99.1 (v1 RC1) released; gtk3 support; source output
volume support; key command handling; bugfixes.