(Object ID, modify) The resultant copy of src_oid.
Storage associated with this name must be freed by the
application, but gss_release_oid() cannot be used generally as it
deallocate the the oid structure itself too (use
gss_duplicate_oid() if you don't want this problem.)
Make an exact copy of the given OID, that shares no memory areas
with the original.
This function is a GNU GSS specific extension, and is not
part of the official GSS API.