Added some pictures for desing document.
Added detailed flowchart describing validator functionality.

Chart describes each step of algorithm and where steps are implemented. Communication between different parts of program are shown and responsabilities explained. Also code examples what kind of instrumentations each step does are shown.
Merge pull request #56 from ollisal/wclvlib

Initial refactoring of webcl-validator to libclv library with public C API, and a driver binary using it
Add yet another test re github issue #54, with heavy builtin usage

This fails with fmax() implicit declaration being assumed to return int,
     which doesn't fit well into the code