Scripts/Misc: Fix uninitialized values

Fix uninitialized values in scripts reported by valgrind.
Scripting/War Master Voone: Fix Cleave spell and minor cleanup.
Merge branch 'master' of github.com:TrinityCore/TrinityCore
Core/Chat: Fix assert triggered by .npc add

Fix an assert in Aura::_UnapplyForTarget() caused by ".npc add" changing the guid of the spawned Creature.
Scripts/Misc: Fix uninitialized values

Fix uninitialized values in scripts reported by valgrind.
Fix target and GetOwner() NULL dereferences .
Updated the compilation requirements to compile the core.

For more informations read the following thread: http://www.trinitycore.org/f/topic/9214-updated-trinitycore-requirements-deprecation-of-old-compilers/
DB/Classlevelstats: Add base damage for exp2
DB/Classlevelstats: Base damage for expansion 1
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into teste2