Fix/suppress most pylint and gpylint warnings

* Add missing function doc strings.
  Suppress this warning on trivial functions in *_warn_patterns.py.
* Remove unused g-importing-memeber, g-complex-comprehension.
* Suppress pylint warning on unrecognized g-* options.
* Suppress too-few-public-methods warnings on simple classes.
* Suppress too-many-arguments and missing-function-docstring in
  html_writer.py, which will be refactored later.
* Fix bad naming, long lines and line breaks, and bad quotes.

Test: compare output for build.log
Change-Id: Icdb34f014a10ec1e642c2cfe8003fc3ae245b507

tools/warn/android_project_list.py

@@ -17,6 +17,7 @@
 
 
 def create_pattern(name, pattern=None):
+  """Return a tuple of name and warn patten."""
   if pattern is not None:
     return [name, '(^|.*/)' + pattern + '/.*: warning:']
   return [name, '(^|.*/)' + name + '/.*: warning:']