add barrier req/resp messages
add port mod message
Merge branch 'multipartReply' into ModifyState
add missing message for groupmod and flowmod, and meter mod support
add rountrip test for portMod and meterMod
add role req and role resp message
add queue structures
add QueueConf message
add SwitchConfig message
add tableMod msg
Merge branch 'multipartReply' into ModifyState
add Hello module:
 - handling of bitmap version message
 - the roundtrip test is very basic since it cause some trouble in some generation
Merge branch 'multipartReply' into barrier
export type t for MeterBand and Bucket module
modify the test for VersionBitmap in order to be a bit more complete
add 2 usefull function for learning switch
Merge branch 'error' into LearningSwitch0x04
LearningSwitch04
fix to add the buffer id
add InPort OXM matching