add custom exception for unshare(2) failures
change getLog().warn to getLog().warning for consistency
fix namespace collision with python-mock [BZ# 601725]
from Kirby Zhou <kirbyzhou@sogou-inc.com>
remove rpmdb files before rebuilding SRPM [BZ# 719008]
from Marko Myllynen <myllynen@redhat.com>
integrate mock with RHN
from Giam Teck Choon <choon@choon.net>
add support for passing options to yum-buildep via mock cfg