Fixing clippy warnings

ignore out directory

u256 full multiplication

Fix panic when downloading stales, update homestead transition

changing x64 asm config

uncomment state transition tests

jsonrpc uses weak pointers to client

Morden switch to Homestead rules at #494,000.

Blockchain module cleanup

Multiplication issue + very exhaustive tests for it

EIP-8

Conflicts:
	util/src/uint.rs

Make "random" trie tests fully deterministic.