add: DataHandler frame
add: DH use signal to use Parent Connection to send out Cmd
move init args of DataHandler to its sub class
add init DH and ack
add ConnectionThread
chg getInitAckArg() to getInitProtocAckArg()
add dhtcp data link back
add DH cmd handler frame
add gui set raw file
fix DHtcp cmd
add DHtcp encoder
fix macro
chg to QDataStream::Qt_4_8
add dbgString for Packet class
chg RAW_BLOCK_SIZE to 1000
fix DHtcp encoder
test blocking TCP send
fix .gitignore
fix DHtcp send file
rename namespace DHtcp to nProtocTCP