Conflicts:
	cmd/utils/cmd.go
	cmd/utils/flags.go
	core/manager.go
	eth/backend.go
	rpc/http/server.go
	xeth/xeth.go

This should make calls faster and removes interaction
with account manager.

This will simplify the next commmit. Hash was only used for logging.

block tests only need the chain, not all of ethereum.

Please be aware that if any of the instances on xeth.frontend are called
the program will crash due to the default, temporarily, frontend
interface.

e390be4 remove deprecated tests
e9e8e7b update blockchain tests - correct genesis hash
a70dd35 fix genesis hash
35964c9 update uncle tests
82c108f update blocktests - fix LLL in pre state
66f0003 update transactionTests

git-subtree-dir: tests/files
git-subtree-split: e390be4fb8421fdabea041b7bdaea3b582224f7d

b9e4e74 adjust gas prices
6a41300 add dajavi memory tests - OOG because of quadratic memory costs
71d80bd update genesis
72b1b52 add randomTest
4b2a090 Merge branch 'PoC9' into develop
fdf7ce0 updated basic blochain test
25c065a Merge pull request #70 from faizkhan00/patch-1
c7e1dac Rename 201501150842LARGE_DATA_IN_CALLCREATE_GOjson to 201501150842LARGE_DATA_IN_CALLCREATE_GO.json
REVERT: 05fe945 Added another pow test

git-subtree-dir: tests/files
git-subtree-split: b9e4e747f01a7b91863ffaa45fd377c251de45aa

05fe945 Added another pow test
7cf2f6b uncle header with block number = 1
d65c7a3 Merge remote-tracking branch 'origin/PoC9' into PoC9
8e05ce5 uncle tests
7c8f2b4 Merge branch 'PoC9' of github.com:ethereum/tests into PoC9
83d1f4d fixed

git-subtree-dir: tests/files
git-subtree-split: 05fe94507b92dbfbfe8c198df33160eaaf9e87fc

This was suggested during review.

Private keys would be locked early if SignLocked was called more than
once because the unlockLater was still running. Terminate it properly.

RWMutexes must be write-locked when writing in order
to actually protect the writes.

There is no point to using time.Duration if the value is interpreted as
milliseconds. Callers should use the standard multiplication idiom to
choose the unit. In fact, the only caller outside of the tests already
does so.

Account is now always a non-pointer. This will be important once
the manager starts remembering accounts.

AccountManager is now always a pointer because it contains locks
and locks cannot be copied.

The account manager is now responsible for picking the
default account and the coinbase.

Natspec + test