jack: change package and attr names to 'jack1' and 'jack2'

Currently, we have a 'jack' package with attrname 'jack1d' and a
'jackdbus' package with attrname 'jackaudio'. Make it consistent 'jack1'
and 'jack2' in both package name and attrname.

This aligns the naming with what can be found on JACK homepage.
jack1: update to version 0.124.1

The current source archive (v0.121.3) is no longer available, forcing an
upgrade. Also, jack1 grew new dependencies: Berkley DB and libuuid.