golint is not supported anymore.  See
https://github.com/golang/go/issues/38968.

We already use both 'go vet' and 'staticcheck' which are maintained.

Add a framework for writing automated tests of the fscrypt command-line
tool.  See cli-tests/README.md for details.

Add the tags file to .gitignore, for developers using
https://github.com/jstemmer/gotags.

Per the FHS, manually installed programs should go under /usr/local.
This change also makes it easier to change the global installation
prefix. For example, package managers should set PREFIX=/usr

This fixes travis issues as well as moving us off of deprecated tooling

* Remove spelling mistakes in the repository
* Add travis script to check for typos.
* Add command to Makefile to check for typos.
* Fixes #71

This change is a complete rewrite of fscrypt's Makefile.

The new build rules can be roughly divided into secions:
  Build   - bin/fscrypt and bin/pam_fscrypt
  Linting - gen (for .proto files), format, lint
  Test    - test, test-{setup|teardown}, coverage.out
  Install - install, uninstall, install-{bin|pam}
  Tools   - tools and other bin/* needed for the other rules

As before, "make" builds the binary and pam_module, while "make all"
builds and tests everything (except for integration tests), and "make
clean" removes any generated files.

Also note that this new build system:
  - Doesn't require input_fail.py
  - Properly falis on linter errors
  - Builds everything into the bin/ directory (customizable)
  - Builds all the vendored tools