upmpdcli: Add UPnP icon. Use procd for start/stop. Add uci config support for multiple instances

Signed-off-by: Ted Hess <thess@kitschensync.net>
debootstrap: depends on ar

debootstrap uses ar to decompress .deb packages

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Merge pull request #667 from thess/upmpdcli-work

upmpdcli: Add UPnP icon. Use procd for start/stop.