am 9fbc8f70: am edf2ab16: am b345693f: am 5a9c5b67: am b02d529a: am 6859939f: am 99a79e80: Doc change: add policy guidelines documents.

* commit '9fbc8f70b6ccdecc95c968ecdb9f8f823bd92857':
  Doc change: add policy guidelines documents.