void *Ns_ServerSpecificDestroy( char *handle, int id, int flags );
flags
argument can be NS_OP_NODELETE or NS_OP_RECURSE. NS_OP_NODELETE determines whether the deletefunc
specified in Ns_ServerSpecificSet is called. NS_OP_RECURSE determines whether this operation is applied recursively. An id of -1 matches all ids.