[1.6.x] Added flat=False to signature of QuerySet.values_list()
[1.6.x] Added flat=False to signature of QuerySet.values_list()

Backport of 20f868bc5a from master

django-nonrel/django,django-nonrel/django,django-nonrel/django,redhat-openstack/django,redhat-openstack/django,felixjimenez/django,felixjimenez/django,felixjimenez/django,felixjimenez/django,django-nonrel/django,redhat-openstack/django,redhat-openstack/django