horst: Add horst version 4.2

horst 3.0 from oldpackages does not work well with the new mac80211 drivers
of 14.07, so please consider to merge this...

Signed-off-by: Bruno Randolf <br1@einfach.org>
Merge pull request #364 from br101/for-14.07

horst: Add horst version 4.2