Separate wireless handlers of mshX and ethX. ethX remains as before.

For mshX, it has been disabled set/get essid, wap and set mode. Get mode always
returns "Repeater" and by now we use the Nickname to show if the mesh is active
("Mesh") or not (empty). The rest remains as before.
Signed-off-by: Luis Carlos Cobo Rus <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>