Added key mappings for monitor and keyboard brightness buttons.
Added keyboard brightness control command.
Migrated wifi to use iw exclusively.  No longer depends on sysfs which
doesn't expose wireless information anymore.
Merge branch 'media-keys' into github-master

* media-keys:
  Added key mappings for monitor and keyboard brightness buttons.
Merge branch 'wifi' into github-master

* wifi:
  Migrated wifi to use iw exclusively.  No longer depends on sysfs which doesn't expose wireless information anymore.