First cut at hobject changes
Simple convert of headers from hobject_t to ghobject_t

Signed-off-by: David Zafman <david.zafman@inktank.com>
Mostly straight hobject_t to ghobject_t for FileStore.cc, LFNIndex.cc and ObjectStore.cc
Simple update to DBObjectMap.cc
Fix DBObjectMap.h
Building FlatIndex.cc
Buiding HashIndex.cc
Simple WBThrottle.cc changes
osd/PG.cc builds
Building PGLog.cc
Make ReplicatedPG build