Log Message:
Changes 0.8.5:
* Fix handling of key event during the game
* Fix new sound player warning
* Fix several network bugs related to random generator
* Fix keep-alive connexion to index server when hosting a server from the game
* Fix crash when invalid display resolution requested
* Fix "play in loop" options for network games
* Refresh the public network games list
* Multi-layer sky
* Camera enhancement
* Weapon behavior: gnu, supertux and polecat now explode when pressing space,
  M16 repeats shoot
* Lefthand-operated mouse option
* Small skin animation enhancements
* Automatically create personal directories for maps, teams and game_mode
* New maps
* Do not overlink index server and game server binaries
* Translation updates