Add support for mesh interfaces

On interface creation, if interface type is mesh point (mp or mesh), a mesh_id
can be specified.

Mesh paths and stations (including non-mesh stations) can be dumped and manipulated.

You can find some usage examples at:

http://o11s.org/trac/wiki/HOWTO-0.2.1#Testing
http://o11s.org/trac/wiki/HOWTO-0.2.1#AdvancedTinkering
7 files changed