Fix Google pylint warnings.

* Rename variables and functions to follow Google coding style.
* Fix line indentations to follow Google coding style.
* Add module and function docstrings.
* Change shebang line to avoid pylint warning.
* Suppress some pylint warnings to avoid too many changes at once.
* Fix typos.

Test: run warn.py --byproject build.log
Change-Id: I569961981b562e35cb5609a96cd5ebb40a80829c
1 file changed