Reasons:
1) all deps we're using should be passing tests (including external)
2) deps can require complicated setup for testing
3) the person responsible for releasing Tendermint should be cautious
when updating a dep

bad dev experience

* de-mystify tests & run them in parallel (#1031)

* test optimization for jenkins (#1093)

* makefile cleanup

* tests: split fast and slow go tests, closes #1055

* pr comments

* restore circle conditions

* fix need_abci

* ...

* docker run: no :Z for circle?

* Remove cmd breaking comment

To achieve faster feedback cycles for our feature PRs this change
reduces the average buildtime from 35 to ~6min by utilising their new
2.0 offering based on docker and nomad. We make use of parallel build
steps wherever possible so that the duration is determined by the
slowest test suite (p2p).

This is an intermediate step until we move our CI/CD completely
on-premise for more control and added security.

* Switch to dep from glide for dependency management

* Update CI dockerfile to use dep instead of glide

* Wrong file extension

* Run 'dep ensure' after copying code

* Install glide to handle abci dependencies in testing

* Use `dep ensure -vendor-only` to setup vendor directory before installing source code on ci

get rid of gox

build target builds inside docker, dev-build - locally

Revert "build target builds inside docker, dev-build - locally"

This reverts commit 8ba89d5e8c.

add build tags to make build/build_race/install

use tendermint's fork of glide instead of tar.gz

remove TMHOME unused var + set length for git hash

get rid of GOTOOLS_CHECK

fixes after review

zip

needed for distribution

it's safe because I added GOPATH to PATH earlier today

Rationale: they only lead to broken builds and should not be used by
anyone.

* linter: address gosimple lints

* linter: make deterministic & a rebase fix

* lint/rpc: fix a gosimple lint

* run linter in CI

* fix rebase mistake

* fix makefile

* ugh

* revert Makefile

* add metalinter to CI

* try this

* linter: last little fix

* need glide

* better

* okayy circle, have it your way

* lints: gosimple

* pr comments

It was writing to stdlib packages net, x/crypto, etc. and failing when it didn't have write access to them (which it often shouldn't)

Fixes issue #941

Explained in golang issue: golang/go#18981 (fixed in develop/1.10)

- remove revision cmd
- rename ensure_tools to tools

golang builds static libraries by default.

```
brew install tendermint --HEAD
==> Installing tendermint from tendermint/tendermint
==> Cloning https://github.com/tendermint/tendermint.git
Cloning into '/Users/antonk/Library/Caches/Homebrew/tendermint--git'...
remote: Counting objects: 437, done.
remote: Compressing objects: 100% (412/412), done.
remote: Total 437 (delta 7), reused 129 (delta 2), pack-reused 0
Receiving objects: 100% (437/437), 3.04 MiB | 1006.00 KiB/s, done.
Resolving deltas: 100% (7/7), done.
==> Checking out branch develop
==> make get_vendor_deps
Last 15 lines from /Users/antonk/Library/Logs/Homebrew/tendermint/01.make:
2017-12-04 14:54:54 -0600

make
get_vendor_deps

go get github.com/mitchellh/gox github.com/tcnksm/ghr github.com/Masterminds/glide github.com/alecthomas/gometalinter
make: gometalinter: No such file or directory
make: *** [ensure_tools] Error 1

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/tendermint/homebrew-tendermint/issues
```

* Updated code with feedback from @melekes, @ebuchman and @silasdavis.
* Added Makefile clause `release` to only run the test on seeing tag
`release` during releases i.e
```shell
make release
```
which will run the comprehensive and long integration-ish tests.

This example shows how a user of the tendermint library can build their
own node and supply it with its own commands. It includes two todos in
order to make it easier for library users to use tendermint.