squash! rfserver: Add support for RouteMod structure

Bugfix: Set python Match/Action value as bson.Binary rather than python
binary type
squash! rflib: Introduce TLV, Action, Match types

- Fix retrieving network byte-order values from BSON
squash! rfofmsg.cc: Refactor ofp_mask conversion

- Specify that ofp_get_mask() takes in_addr in network byte-order
squash! rfclient: Replaces RouteInfo with RouteMod

- Put output action last
squash! rfclient: Replaces RouteInfo with RouteMod

- Match packets destined for the local ethernet address