Tweaked client handling of "Server is version x.xx" server rejection messages.
Client now sends info requests to servers with both KMQ2 and stock Q2 protocol versions.
Client now ignores server "wrong version" status messages.
Added server sending protocol version in challenge message.
Changed stats.log to save to savegamedir instead of the Quake2 root folder.
Renamed cvars menu_sensitivity, menu_rotate, and menu_alpha to ui_sensitivity, ui_item_rotate, and ui_background_alpha.
Removed some unused cvars.
Added CVAR_SAVE_IGNORE flag to "game" and "gamedir" cvars.
Added descriptions for most cvars.
Added dumpcvars command to output a list of cvars with their descriptions to cvarlist.txt.