MOSDMap: reencode full map embedded in Incremental, as needed
MOSDMap: reencode full map embedded in Incremental, as needed

The Incremental may have a bufferlist containing a full map; reencode
that too if we are reencoding for old clients.

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@newdream.net>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph