See PEP 328[1] for details. This feature was introduced in Python 2.5 and
will become mandatory in Python 3.
[1]: http://www.python.org/dev/peps/pep-0328
(imported from commit 7444eeba8a08d5f91b94c7921848f2274979bd76)
We have a lot of forged users that have bad fullnames due to
historical versions of our fullname computations; this function will
clean those up.
Also, we have a bunch of users with emails like foo|mit.edu@mit.edu
that were the result of a mirroring bug that we want to get rid of
from autocomplete -- putting them in a useless realm name will do.
(imported from commit 6e305093653ca9d327e9e28491636e99d16cfe1d)
