Port rfc822.py changes that didn't make it into this copy, specifically that dots are allowed in obs-phrase.  This fixes parsing of dots in realnames.
Port rfc822.py changes that didn't make it into this copy,
specifically that dots are allowed in obs-phrase.  This fixes parsing
of dots in realnames.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator