DDS — delete clone

ref-1046: delete_clone
Issue [THALES]
Useful to remove a clone from a CacheAccess in addition to the deletion of all the clones.
Proposal [THALES]
add an operation on CacheAccess to delete a clone
should concern the object itself + all its components, but not the related objects (regardless to what was the clone request)
Concrete changes
IDL
local interface CacheAccess {
...
void delete_clone(
in ObjectReference ref);
...
in section 3.1.6.3.2 CacheAccess
in the table, after the purge operation, insert the delete_clone operation, by insetring the following entries:
delete_clone void
ref ObjectReference
in the following text,
introduce a bullet, before the last one, with the following content:
"alternatively, the copy of one object and all its attached contained objects can be detached from the CacheAccess (delete_clone);"

see below