Route JSON based messages over TCP

run hub up using:

msgHub -tcpPort=[port] -tcpDelimiter=[ascii code]

e.g. start on 12345 using line feed as delimiter

msgHub -tcpPort=12345 -tcpDelimiter=10

###JSON message format:

{"event": "sub",	"type": "messageType. CSV",	"key": "messageKey. CSV",		"subkey": "optional. may be wildcard",   "id": "optional id. used for same sub down same tcp client" "echoFields": "optional. JSON will be echoed back to the client with any message"}

{"event": "unsub",	"type": "messageType. CSV",	"key": "messageKey. CSV",		"subkey": "optional. may be wildcard",   "id": "optional id. used for same sub down same tcp client"}

{"event": "pub",	"type": "messageType",	"key": "messageKey",		"subkey": "optional",   ........ any json data}

Built file is linux64

###Usage of ./msgHub:
-quiet=false: Turn off log output
-subBatchOutput=true: Batch subscription output
-subBatchSize=1024: Subscription output batch size
-subBatchTimeout="1s": Subscription batch timeout
-subBatchingBuffer=1024: Subscription batch buffer size
-tcpBatchSize=1: TCP output max batch size
-tcpBatchTimeout="1s": TCP batch timeout. Set tcpBatchSize > 1 to take effect.
-tcpDelimiter=10: TCP message delimiter
-tcpPort=0: TCP port