Merge branch 'upstream' into passwordeval

Merged version 4.39.0

Conflicts:
	PKG-INFO
	docs/CHANGELOG
	docs/configuration.html
	docs/configuration.txt
	getmail.spec
	getmailcore/__init__.py
	getmailcore/_retrieverbases.py
	getmailcore/utilities.py
Added script to update usptream branch
update script now sets author