ceph/ceph — pull request #1863 by yehudasa (2014-05-23 21:59:45+00:00)
Title: rgw: reduce calls to rgw_obj.set_obj()

This commit is part of the performance work that we're doing.

default manifest iterator construction did unneeded init of rgw_obj.
Also add a smarter copy constructor to RGWObjState that does not copy
manifest if not needed.

Signed-off-by: Yehuda Sadeh