Merge branch 'release/poc5-rc12' into develop
Stop peers when they don't respond to ping/pong. Might fix ethereum/go-ethereum#78
Prevent peer stop crash by removing logging
Validate minimum gasPrice and reject if not met
Fix BigMax to return the biggest number, not the smallest
Implement CalcGasPrice for ethereum/go-ethereum#77
Refactor to use new method
Don't mine transactions if they would go over the GasLimit implements ethereum/go-ethereum#77 further.
Expose GasLimit to ethPub
Implemented counting of usedGas
Exposed usedGas through ethPub
Fix compare
Namereg lookup fix
Moved process transaction to state manager

* Buy gas of the coinbase address
Added a buy gas method
Minor changes
Merge branch 'develop' into interop

Conflicts:
	peer.go
log changes
Merge branch 'develop' into interop
Changed opcode numbers and added missing opcodes