message: net: take CJDNS into account in CNetAddr::GetReachabilityFrom()
  This way `GetLocal()` will pick our CJDNS address for a CJDNS peer.
diff: @@ -892,6 +892,11 @@ int CNetAddr::GetReachabilityFrom(const CNetAddr *paddrPartner) const
  case NET_I2P: return REACH_PRIVATE;
  default: return REACH_DEFAULT;
  }
  + case NET_CJDNS:
  + switch (ourNet) {
  + case NET_CJDNS: return REACH_PRIVATE;
  + default: return REACH_DEFAULT;
  + }
  case NET_TEREDO:
  switch(ourNet) {
  default: return REACH_DEFAULT;
  