botch: Added XP Calculation utilities for levels, and ske..

Revision 930
Added XP Calculation utilities for levels, and skeleton framework for saving character dataAdded Files:
[ul]
[li]trunk/Source/Worlds/Shooter/Stats/PlayerData.cpp[/li][li]trunk/Source/Worlds/Shooter/Stats/PlayerData.h[/li][li]trunk/Source/Worlds/Shooter/Stats/XPCalc.h[/li][/ul]
Committed By Maurino Berry