Improvement of logging. Some were fatal whereas they shouldn't.
Improvement of the protocol system. There were mutex permanent locking.
Protocols that do not use http are now non-blocking (except maybe one).
A user can 'quick join' the server by logging then pressing the 'quick play' button in the online panel.
Improvement of packet serialization/unserialization
Added a ping protocol to ping peers as long as they don't respond
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/networking@13112 178a84e3-b1eb-0310-8ba1-8eac791a3b58