Fix the way tester works, move it into the tools directory and clean up
how it processes files including adding more data to the summary about
what failed and why.
Enable more linters, address the issues and do a major naming refactor
to use golang lower camelCase identifiers for types, functions, methods
and variable names.
Also:
* Clean up inline generation so it doesn't rely on temporary variables.
* Remove unused functions generated by inline.pl.
Adds basic non ascii support including substring, substr, slice functions,
which work with runes (prevent utf-8 length).
This includes adding runes compatible functions:
* indexOf
* lastIndexOf
* Faster, more straightforward, etc.
* More advanced object literals (get ..., set ...)
* More tests using JavaScript from the wild (http://cdnjs.com/)
