The client side might benefit a bit more in the future
but the server side does not (and should not) require
everything client side does; thus use base ALSA target.

Looks like the cause to temporarily omit these is irrelevant.

ltsp-icewm used to be the only ALTSP (testbed) distro over here
but now its terminal server part works good enough to seperate
it from the UI part.

A few additions to facilitate testing, tweaking and benchmarking:
iftop, openssh-server, mplayer

alsamixer *is* useful :)

alterator-ltsconf needs further testing,
and aplay is handy for remote audio tests.

Sort of builds on current Sisyphus with ltsp-related packages
fixed up in a pocket but the latter are rather in need of some
proper face-lift.