Merge with crew-stable

Merge with crew-stable

Merge with crew-stable

merge with mpm

merge with crew-stable

for calls expecting bool args, pass bool instead of int str.splitlines and email.message.as_string both expect a bool argument defaulting at False: replace f(1) by f(True) and f(0) by f()

merge with -stable

merge with crew-stable

store: eliminate reference cycle in fncachestore no reference to self in fncacheopener Inspired by Adrian Buehlmann

win32mbcs: add special wrapper for osutil.listdir(). osutil.listdir() may misinterpret 0x5c of MBCS 2nd. byte as path separator. New wrapper prevents this by adding it beforehand.