UNICODE cleanup (see lib/util_unistr.c).

No more ugly static library buffers and all functions take a destination
string length (especially unistrcpy was rather dangerous; we were only
saved by the fact that datagrams are limited in size).

source/rpc_server/srv_reg.c

@@ -136,7 +136,7 @@ static void reg_reply_open_entry(REG_Q_OPEN_ENTRY *q_u,
 		status = 0xC000000 | NT_STATUS_TOO_MANY_SECRETS; /* ha ha very droll */
 	}
 
-	fstrcpy(name, unistr2_to_str(&q_u->uni_name));
+	unistr2_to_ascii(name, &q_u->uni_name, sizeof(name));
 
 	if (status == 0x0)
 	{