[json] mask out only TObject kNotDeleted & kIsOnHeap bits
[json] mask out only TObject kNotDeleted & kIsOnHeap bits

Only these bits now excluded from I/O, while they must be on after
reading. Making JSON code much more compact, while instead of:

"fBits": 50331649,

one will see:

"fBits": 1,

Same will be done with XML

karies/root,karies/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,olifre/root,olifre/root,karies/root,karies/root,karies/root,root-mirror/root,olifre/root,olifre/root,karies/root,karies/root,root-mirror/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,karies/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,olifre/root,karies/root