build: fix missing .exe executable names on cross builds

console, vendor: update liner and enable multiline mode

appveyor: build 386 too, upload both to the gethstore

solves #3119

Signed-off-by: VoR0220 <rj@erisindustries.com>

* travis.yml: don't create darwin/386 builds

* build: remove godep remains

* internal/build: improve archives

- enable compression for zip files
- don't write half-complete archives

* build: add -unstable to archive names

travis, build: implement uploading archives to azure

common/math: go fmt

* common/math, core/vm: implement fast EXP.

Courtesy @chfast & @karalabe

* common/math: fix go vet issues on exp calculation

* core: Add metrics collection for transaction events; replace/discard for pending and future queues, as well as invalid transactions

* core: change namespace for txpool metrics

* core: define more metrics (not yet used)

* core: implement more tx metrics for when transactions are dropped

* core: minor formatting tweeks (will squash later)

* core: remove superfluous meter, fix missing pending nofunds

* core, metrics: switch txpool meters to counters

core/state, eth/downloader, trie: reset fast-failure on progress

internal/debug, internal/ethapi, rpc, swarm/storage: go fmt

core/vm: add limit option to LogConfig

all: remove weird files

cmd/utils, core, params: explicitly pick reprice fork for fast sync

whisper: project restructured, version 5 introduced

This commits adds a draft version of the new shh v5 protocol.
The new version is not on by default, --shh still selects version 2.

* cmd/evm: Allow stdin and files as sources of bytecode

* cmd/evm: Print and exit instead of panicing

* cmd/evm: fix compile and vet errors

This commit includes several API changes:

- The behavior of eth_sign is changed. It now accepts an arbitrary
  message, prepends the well-known string

        \x19Ethereum Signed Message:\n<length of message>

  hashes the result using keccak256 and calculates the signature of
  the hash. This breaks backwards compatability!
  
- personal_sign(hash, address [, password]) is added. It has the same
  semantics as eth_sign but also accepts a password. The private key
  used to sign the hash is temporarily unlocked in the scope of the
  request.
  
- personal_recover(message, signature) is added and returns the
  address for the account that created a signature.

This commit converts the dependency management from Godeps to the vendor
folder, also switching the tool from godep to trash. Since the upstream tool
lacks a few features proposed via a few PRs, until those PRs are merged in
(if), use github.com/karalabe/trash.

You can update dependencies via trash --update.

All dependencies have been updated to their latest version.

Parts of the build system are reworked to drop old notions of Godeps and
invocation of the go vet command so that it doesn't run against the vendor
folder, as that will just blow up during vetting.

The conversion drops OpenCL (and hence GPU mining support) from ethash and our
codebase. The short reasoning is that there's noone to maintain and having
opencl libs in our deps messes up builds as go install ./... tries to build
them, failing with unsatisfied link errors for the C OpenCL deps.

golang.org/x/net/context is not vendored in. We expect it to be fetched by the
user (i.e. using go get). To keep ci.go builds reproducible the package is
"vendored" in build/_vendor.

Fixes #3203

Update goleveldb, add debug.chaindbCompact