Fixed many bugs

Added NzOpenGL::GetEntry
Activated preprocessor error if not compiling with a C++11 compliant
compiler
Cube can now be constructed with a Rect
Desactived utility option "threaded window" (bugged)
Epured Image interface (No more UpdateFace, use Update with z = the face
you are targetting)
Fixed compilation errors (Thanks to RafBill)
Fixed predefined colors not exported
Fixed uplading pixels not aligned by 4 bytes
Fixed Thumbs.db files not ignored by git
NzImage now supports Filling and Flipping (Horizontally and vertically)
NzImage::Get(Const)Pixels now support pixel location
NzVector(2/3) can now return floatting distance/length with all types
NzVector(2/3/4) can now be constructed by a vector of smaller dimension
Premake now set "-std=c++11" build option for GCC
Renamed NzImage::(Get/Set)Pixel to (Get/Set)PixelColor
Updated new([])/delete([]) in the leaks tracker to the new C++11
signatures

include/Nazara/Math/Matrix4.hpp

@@ -96,17 +96,12 @@ template<typename T> class NzMatrix4
 
 		struct SharedMatrix
 		{
-			SharedMatrix() : // Vivement GCC 4.7 sur Windows
-			refCount(1)
-			{
-			}
-
 			T m11, m12, m13, m14;
 			T m21, m22, m23, m24;
 			T m31, m32, m33, m34;
 			T m41, m42, m43, m44;
 
-			unsigned short refCount;
+			unsigned short refCount = 1;
 			NazaraMutex(mutex)
 		};