Merge pull request #3605 from ceph/wip-da-SCA-20150129

Various SCA and smaller bugfixes

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/mds/MDS.cc
Simple merge

diff --cc src/msg/async/AsyncConnection.h
Simple merge

diff --cc src/osd/PG.cc
Simple merge

diff --cc src/osd/ReplicatedPG.cc
Simple merge

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

diff --cc src/test/librbd/test_librbd.cc
Simple merge