Merge pull request #3991 from rzarzynski/wip-11087

rgw: multiple fixes for copying Swift objects

Reviewed-by: Yehuda Sadeh <yehuda@redhat.com>

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

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

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

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

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

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

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