[svn] Add UNIT_STAT_CASTING, and use it to update attack timer as test.

--HG--
branch : trunk

src/game/Unit.h

@@ -363,6 +363,7 @@ enum UnitState
     UNIT_STAT_DISTRACTED      = 0x1000,
     UNIT_STAT_ISOLATED        = 0x2000,                     // area auras do not affect other players
     UNIT_STAT_ATTACK_PLAYER   = 0x4000,
+    UNIT_STAT_CASTING         = 0x8000,
     UNIT_STAT_ALL_STATE       = 0xffff                      //(UNIT_STAT_STOPPED | UNIT_STAT_MOVING | UNIT_STAT_IN_COMBAT | UNIT_STAT_IN_FLIGHT)
 };