Patch #1464708 from William McVey: fixed handling of nested comments in mail addresses. E.g. "Foo ((Foo Bar)) <foo@example.com>" Fixes for both rfc822.py and email package. This patch needs to be back ported to Python 2.3 for email 2.5.
flag to -1 (unknown) since it can't tell from the date whether it should be set. patch from Aldo Cortesi
and NEWS updates.