[alfred] fix missing alfred-gpsd binary

fixes #22

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
babeld: procd support

note: dependant on a change that hasn't been commited to procd yet,
adding support for null arguments.
babeld: hotplug.d support

reload babeld on ifup, so that new interfaces can be added to it's
config file with correct names.
babeld: procd support

note: dependant on openwrt commit 85fabd68, adding support for null arguments.