Pull out stratum traffic.

mdzLock, mdzDump("stratumDump.txt")
Improve dumping.

Reserve ID 0. Not very useful anyway.
Dump stratum send and receive line so stratum_init can be dumped.
Dump additional data for testing.
Be dumber, produce something I can debug.

DISABLE NONCE ROLLING and MERKLE HASHING.
This way I force the miner iterating on nonces I can test.