A bunch of cvars for server administrators to set up default game rules.
Added cvars to set default game mode
rm_default_weapontype 0(default) all weapons, 1 restrict to one weapon(rifle by default), 2 Level One only, 3 Bullet Storm only
rm_default_weapon An ID of weapon marines will be given. If weapon type is set to 1(Restrict to one weapon) then this weapon will be given
rm_default_carnage
rm_default_heavy
rm_default_alienspeed
rm_default_refillsecondary
rm_default_allowrevive
rm_default_hpregen
rm_default_flamer
rm_default_infinitespawners
rm_default_ammobonus
rm_default_slowmo If 0 env_slomo will be deleted from map on round start(if present
rm_default_weaponreq If 0 weapon requirement(such as flamer) will be deleted from map on round start(if present)
Added cvars rm_alienspeedmin, rm_alienspeedmax
Added rm_ammo_bonus command to scale ammo, rm_challenge 4 to enable a new game mode
Added support for carnage mode to scale all spawners