AI server: removed a forgotten debug message.
Game server: players are (again) saved every 5 minutes. Inactive sessions are also now timed out more logically, after at least 10s of inactivity. Player-based expirations are also additionally checked every ~30s (why not, but we'll need to implement a proper system eventually...).
Game server: slight tweak to remove an unnecessary opcode check from the bottom of the packet handler; we have a handler for this packet, we might as well get our money's worth...
AI server: no need for PARSE_ARGUMENTS() without EVT (AI EVTs are far too specific for it).
Game server/skill system: allowed for CSW leader car-type transformations. Closes #230, refs #87.
Game server: allowed an extremely generous time of 30min to create a character / load the game (the time's technically since the last response, so it should never remotely go beyond this -- not even on an extremely old setup).
Game server: implemented slot check for wings, they can now be equipped again.