Merge pull request #1500 from ceph/wip-tid_t

Change tid_t to ceph_tid_t to avoid conflicts with a popular type

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

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

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

diff --cc src/osdc/Objecter.cc
Simple merge

diff --cc src/osdc/Objecter.h
Simple merge