[3.14] community/tinc-pre: upgrade to 1.1pre18
backport tinc-pre, also changed maintainer
some major fix
- Fix segfault when failing to read random numbers.
- fix send_udp_probe_packet segfault https://github.com/gsliepen/tinc/issues/227
- fix find_cached segfault https://github.com/gsliepen/tinc/issues/226 Don't keep an address cache in an outgoing_t.
- Try harder to connect to unreachable nodes.
- fix: use EVP_DecryptUpdate while decrypting
- Prevent large amounts of UDP probes being sent consecutively. manuall patched
- Fix segfault when dest->mtu is 0.