Geth 1.4.13: Into the woods

[release/1.4.13] core/state: track all accounts in canon state

This change introduces a global, per-state cache that keeps account data
in the canon state. Thanks to @karalabe for lots of fixes.

(cherry picked from commit a59a93f4)

Geth 1.4.13

(cherry picked from commit 25ed5fed)

G

Geth 1.4.12: Shanghai with love

(cherry picked from commit 581b320b)

Release/1.4

Geth 1.4.11

(cherry picked from commit bb8059f6)

Conflicts:
	core/blockchain.go
	core/database_util.go
	core/headerchain.go
	eth/filters/filter.go

(cherry picked from commit f0134f36)

(cherry picked from commit 4c2cc32f)

(cherry picked from commit d68865f3)

(cherry picked from commit 8f0a4a25)

(cherry picked from commit 071af57b)

(cherry picked from commit 1dd27208)

Conflicts:
	eth/handler.go
	eth/sync.go

The eth/61 protocol was disabled in #2776, this commit removes its
message handlers and hash-chain sync logic.

(cherry picked from commit 016007bd)

Conflicts:
	eth/handler.go
	eth/handler_test.go

(cherry picked from commit 8c23f20c)

The new build script, ci.go, replaces some of the older shell scripts.
ci.go can compile go-ethereum, run the tests, create release archives
and debian source packages.

(cherry picked from commit 6c33ba14)

Fixes #2825

(cherry picked from commit e4736fe4)

Fixes #2829

(cherry picked from commit 4be37222)

(cherry picked from commit c7c82f1b)

(cherry picked from commit 91f18ffd)

and locking bugs found in its wake.

(cherry picked from commit 51f8ce26)

Geth 1.4.10 "Return of the ETH"

(cherry picked from commit 993b4121)

(cherry picked from commit 2c2e389b)

(cherry picked from commit 32912357)

(cherry picked from commit 461cdb59)

(cherry picked from commit 7f00e8c0)

(cherry picked from commit a87089fd)

(cherry picked from commit 1e24c2e4)

(cherry picked from commit 9e56811a)

(cherry picked from commit 6060e098)