uuid_unpack
uuid_unpack(uu1, &uuid1);
uuid_unpack(uu2, &uuid2);
uuid_unpack(out, &uu);
uuid_unpack(buf, &uu);
uuid_unpack(uu, &uuid);
void uuid_unpack(const uuid_t in, struct uuid *uu);
uuid_unpack(uu, &uuid);
uuid_unpack(uu, &uuid);
uuid_unpack(uu, &uuid);