Add default -Wall -Werror or -Wall.

* Skip Android.bp, prebuilt, and HEADER_LIBRARIES targets.
* If neither -Wno-error nor -Werror is used, add default -Wall -Werror.
  However, if the build target is in a project
  under one of ANDROID_WARNING_ALLOWED_PROJECTS, add only -Wall.
* Dump name of modules using -Wno-error or added -Wall -Werror
  into file $(PRODUCT_OUT)/wall_werror.txt.

Bug: 66996870
Test: normal build
Change-Id: Ief8cf776e8613ed073a64dd271534688845d5c2c