add prechangegroup and pretxnchangegroup hooks.
prechangegroup lets you stop push, pull or unbundle before it begins.
pretxnchangegroup lets you inspect changegroup before transaction is
committed, and roll back if you not like it.
"""
i18n.py - internationalization support for mercurial
Copyright 2005 Matt Mackall <mpm@selenic.com>
This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
"""
# the import from gettext is _really_ slow
# for now we use a dummy function
gettext = lambda x: x
#import gettext
#t = gettext.translation('hg', '/usr/share/locale', fallback=1)
#gettext = t.gettext