[7886] Drop use table petcreateinfo_spell

This is first commit in chain for remove oudated and not used pet functionality.

    * Use instead dropped table CreatureSpellData.dbc if creature_template.PetSpellDataId set (mostly hunter pets)
    * Use creature_template.spellN if not set creature_template.PetSpellDataId (mostly different summon creatures)
    * Fixed bug with not removing from action bar spell icon for not ranked unlearned spells.

    Note: summoned controllable creatures without PetSpellDataId must have expected spells in spellN feilds for creature_template.

[7887] Drop pet spell teaching code, including field in character_pet.

Author: VladimirMangos

--HG--
branch : trunk

src/game/DBCStructure.h

@@ -725,11 +725,13 @@ struct CreatureFamilyEntry
                                                             // 27       m_iconFile
 };
 
+#define MAX_CREATURE_SPELL_DATA_SLOT 4
+
 struct CreatureSpellDataEntry
 {
     uint32    ID;                                           // 0        m_ID
-    //uint32    spellId[4];                                 // 1-4      m_spells[4]
-    //uint32    availability[4];                            // 4-7      m_availability[4]
+    uint32    spellId[MAX_CREATURE_SPELL_DATA_SLOT];        // 1-4      m_spells[4]
+    //uint32    availability[MAX_CREATURE_SPELL_DATA_SLOT]; // 4-7      m_availability[4]
 };
 
 struct CreatureTypeEntry