[PATCH 13 of 13] py3: make largefiles/wirestore.py use absolute_import

[timeless]

So, you're going to need to resend to fix the two missing copy
markings at the beginning of the series.
I'd encourage you to consider adding a 16 which renames match_ to
matchmod, but you don't have to (someone can do it later, and we
should probably add a checkcode to complain about it -- we have one
that suggests *mod ...).

Otherwise, this series looks right to me (but my eyes are tired).