* refactor: port the cpplint runner to javascript
* fix: address code review suggestions
* refactor: make .cc, bootstrapped test funcs inline
* refactor: make CC_ROOTS inline too
* fix: test process.mainModule before calling main()
* refactor: reverse logic order in findChangedFiles
* refactor: make findChangedFiles() more readable
* fix: copy-paste error introduced in 3b17400
* chore: fix grammar in log message
