Change approach to calling clang and parsing its output.

- Put the clang args in shim.sh.

- Pipe the output to a Racket program, parse.rkt, which will structure
  the Clang output as JSON.
Merge branch 'master' of github.com:brainwane/secureapi

* 'master' of github.com:brainwane/secureapi:
  requirements