* DB/Creature: Fix Living Storm coords

By Magnifikator closes #11785
* Buildsystem: Changed required CMake version to 2.8.9 and removed a check for version we no longer support in msvc settings
* Build system: Fix clang build

See wiki for latest build instructions under Mac OS X!
* Scripts/Icecrown Citadel: Fixed Muradin/Saurfang attacking each other during Gunship Battle

Closes #11786
* Core/SAI: Implement two new event types that are triggered when a certain creature/gameobject entry or guid gets within a given distance of the source.