Remove quotes from patch command.
When the gpatch fix for solaris was introduced in 67a0a3852024 the
patch command was "". For some strange reason windows 2000 is
not happy with those quotes when given in os.popen.
# repo.py - repository base classes 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.
class RepoError(Exception): pass