remove the custom messages for TURN IPC
define a new STUN attribute for use in messages used for turn <-> net module communications
use STUN messages for turn <-> net module messages
update input and output sizes for massively reduced in size messages
send allocation failure response
Merge pull request #20 from uProxy/trevj-ipc

use STUN messages for TURN <-> net module communication
Merge branch 'master' into trevj-churn-sample
configure the churn sample fte config the same as the copypaste sample