Implement Global Cooldown (originaly written for TC2 v2.4.3).

Thanks eugen.rivniy for the port.
Fixes issue #67.

--HG--
branch : trunk

src/game/Player.h

@@ -1629,6 +1629,11 @@ class Player : public Unit, public GridObject<Player>
         void SetLastPotionId(uint32 item_id) { m_lastPotionId = item_id; }
         void UpdatePotionCooldown(Spell* spell = NULL);
 
+        // global cooldown
+        void AddGlobalCooldown(SpellEntry const *spellInfo, Spell const *spell);
+        bool HasGlobalCooldown(SpellEntry const *spellInfo) const;
+        void RemoveGlobalCooldown(SpellEntry const *spellInfo);
+
         void setResurrectRequestData(uint64 guid, uint32 mapId, float X, float Y, float Z, uint32 health, uint32 mana)
         {
             m_resurrectGUID = guid;
@@ -2608,6 +2613,7 @@ class Player : public Unit, public GridObject<Player>
         ReputationMgr  m_reputationMgr;
 
         SpellCooldowns m_spellCooldowns;
+        std::map<uint32, uint32> m_globalCooldowns; // whole start recovery category stored in one
 
         uint32 m_ChampioningFaction;