Merge pull request #1258 from ceph/wip-rgw-gc

radosgw-admin: gc list --include-all

Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

diff --cc src/cls/rgw/cls_rgw.cc
Simple merge

diff --cc src/rgw/rgw_rados.cc
Simple merge

diff --cc src/rgw/rgw_rados.h
Simple merge