jsre: patch up the pretty printer to have a decent look

Precompiled ec recover padding

Fix various data races in eth and core

Fix RPC sign

Differentiate between 0 and unspecified gas/gasprice

core: skip genesis block for reprocess. Closes #1202

eth: implement the NewBlockHashes protocol proposal

eth/downloader: gather and ban hashes from invalid chains

core: write accounts to statedb. Closes #1210

Improve export command 

core: added a test for missing nonces

This test showed the logic in the queue was slightly flawed sending out
transactions to its peer it couldn't even resolve itself.

core: settable genesis nonce

crash fix: skip deep log if self.chain is not caught up

@see trace https://gist.github.com/eupraxic/87fdfefe702c51d5944d