Buildsystem/GCC: Enforce version 4.7.2 and enable c++11 compilation
Core/Misc: Removed unused defines, added missing include and removed a few warnings
Scripts/Icecrown Citadel

* Deathbringer Saurfang will now evade if any player stands on the gunship
* Fixed players being stuck in combat after defeating gunship
* Fixed players not sticking to gunships
DB/SAI: Fix Shadowsworn Cultist

By dr-j, closes #11767
DB/Quest: Fixes Gino's visibility and quest chain

By nelegalno and Rushor, closes #9030
DB/Misc: Set comment of creature_classlevelstats to text

By Magnifikator closes #11762
Core/Logging: Fixed filenames of backup logs

Closes #11765
Update README.md
DB/Quest: Fix wrong ExclusiveGroup

By untaught, Closes #11715
DB/SAI: Fix Dun Garok Rifleman spam

By dr-j, closes #11773
DB/SAI: Umpi

By dr-j, closes #11775
DB/SAI: Elemental Slave

By untaught, updates #11742
DB/SAI: Ferocious Yeti spamming Berserk

By dr-j closes #11776
ICC updates
Merge branch 'master' of git://github.com/TrinityCore/TrinityCore
Fix compile error