It is now possible to exit the REPL using Ctrl-C, Ctrl-D or by typing "exit".

The ethereum command line interface is now structured using subcommands.
These separate the different tasks it can perform.

Almost all flag names are backwards compatible.

The key tasks have not been ported to subcommands since they will be
replaced by the new accounts infrastructure very soon.

It is no longer imported by any package in our tree.

Various functions throughout the codebase used it to grab settings. This
has to stop because I want to use them without reading the config file.

These functions can now be used without reading the config first:

* ethdb.NewLDBDatabase
* ethrepl.NewJSRepl
* vm.New

JIT build fixes

Conflicts:
	cmd/utils/cmd.go

Conflicts:
	eth/block_pool.go
	eth/block_pool_test.go
	eth/protocol_test.go
	miner/worker.go

[WIP] Update Readme 

Updated JSON log events

Remove Websockets RPC transport

- best peer cannot be idle for more than idleBestPeerTimeout
- introduce ErrIdleTooLong fatal error
- modify default values

9e3fe72 update state root hash

git-subtree-dir: tests/files
git-subtree-split: 9e3fe720e3d46f046e06a91e45c881e79557f721

13be3e3 update

git-subtree-dir: tests/files
git-subtree-split: 13be3e33afa8d708786f82b63bf874138f05bb02

402e748 Merge branch 'PoC9' of github.com:/ethereum/tests into PoC9
13b6a99 State test refill.

git-subtree-dir: tests/files
git-subtree-split: 402e7482f9283e08869b3412329e24ef6287d8c7