roken: Split up mini_inetd_addrinfo()

To speed up tests/gss/check-gssmask we need to remove the `sleep 10`
found there, and to do that we need to make the gssmask daemons use
roken_detach_prep()/roken_detach_finish(), and to do that we need to
split up mini_inetd_addrinfo().

This commit authored by Claude with human guidance and review.

lib/roken/version-script.map

@@ -20,7 +20,9 @@ HEIMDAL_ROKEN_2.0 {
 		hex_encode;
 		issuid;
 		mini_inetd;
+		mini_inetd_accept;
 		mini_inetd_addrinfo;
+		mini_inetd_addrinfo_listen;
 		net_read;
 		net_write;
 		parse_bytes;