Issue #62: Refactor meat.py

Moved meat.py => address.py
Removed all references to meat.
Removed rawPubkey and rawPrivkey and replaced them with functions that calculate them on the fly.
Removed the b58_encode/sha256/md5/ripemd160 functions and started using the pycoin equivalents
Merge pull request #63 from jimmysong/62

Issue #62: Refactor meat.py
changes in txcons/txspec
p2ptrade update
Issue #68: get all the commands to run again
Merge branch '68' of https://github.com/jimmysong/ngcccbase

Conflicts:
	wallet_controller.py
partially-signed transaction construction
p2ptrade update
getopt2argparse
p2ptrade update
Merge pull request #69 from fanatid/argparse

argparse instead getopt
p2ptrade: HTTP comm and command-line operations
p2ptrade: made agent self-sufficient
fix pycoin_txcons (embarrasing...)
--wallet wallet_path argument (doesn't really work), unit in addasset
meged utxo.db with wallet.db
if you want to preserve old tx data you have to move it manually via
sqlite dump
brought back composed_tx_spec in RawTxSpec to avoid problems with
txdb
Merge branch 'master' into qt
add ugly data for tradepage