* This is let finally hide guid structure in ObjectGuid.h/.cpp code.
* Shared related code.
NOTE: while switch to use new clasess one more problem has been detected
with not-safe code in .pdump work for future per-map multi-threading.
It's need rewrited before will possible safe use in like case.
For current single world thread case it's safe.
Only one example (mostly) case converted to use it.
Need lot work for finally switch to class obly use, so old low-level defines still exist also (while used).
But some unused low-level defines dropped.
