mint-arena: Add GL2 extras to refdef_t
mint-arena: Don't show scoreboard at SP postgame

Caused by d8ce6646aab7d00e1aeef40b9eea13f01cd371d2.
mint-arena: Fix Team Arena post game not getting mouse move events

Add system call to call server shutdown _now_, instead of using
sv_killserver to shutdown server _later_.

Now Mouse State is set _after_ server is shutdown (before it was just after setting sv_killserver),
so cgame can receive mouse events.

Somewhat clean up cgame variables when killing server from UI.
Connecting to or starting a server will cause cgame restart though.
mint-arena: Fix COM_Parse line counting

See 3936b00fcc77886ade0f5e5440f3d820fd0ad644 and
https://github.com/zturtleman/spearmint/commit/7ba7ff7f9d23f189ff3ac34f6cfa6dbe78200737
mint-arena: Fix map_restart 0 not checking if full reload needed

If delay for map_restart is less or equal to 0, check
if need to do a full map restart. Needed for switching
gametypes with `map_restart 0`.
mint-arena: Fix map_restart doing full reload when cvar was changed back

Don't have map_restart do a full reload just because a tracked
cvar was changed (it might of been changed back). Check if latched
string is different from value.
mint-arena: Have CGame pass sizes for various structs

Handle mismatched sizes. This allows extending the structs
without breaking backward/forward compatibility. Missing
fields are cleared.
mint-arena: Remove GLCONFIG_SIZE from tr_types.h
mint-arena: Update q_shared.c/h to match Spearmint
mint-arena: Move SAY defines from q_shared.h to bg_misc.h
mint-arena: Allow disabling drawing sky for refdef

Used when sky is drawn separate from world, aka skybox portal.
removed unwanted cvars from q3_ui
frag -> kill
fraglimit & capturelimit -> scorelimit
rename some images
renamed CHARACTERIST_* -> BOT_*
* removed
  powerups
  ammo boxes
  persistant powerups (MISSIONPACK only)
  armor (pickup and stat)
  holable items
  health pickups

moved 'quantity' out of g_item and into g_weapon_t (see code/game/g_weapon.c)
use global pickup sound (for now at least, may use specific one depending on item type)
Merge branch 'master' of github.com:mecwerks/Mecwerks-Logic