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/Cube.hpp

@@ -8,6 +8,7 @@
 #define NAZARA_CUBE_HPP
 
 #include <Nazara/Core/String.hpp>
+#include <Nazara/Math/Rect.hpp>
 #include <Nazara/Math/Vector3.hpp>
 
 template<typename T>
@@ -17,6 +18,7 @@ class NzCube
 		NzCube();
 		NzCube(T X, T Y, T Z, T Width, T Height, T Depth);
 		NzCube(T cube[6]);
+		NzCube(const NzRect<T>& rect);
 		template<typename U> explicit NzCube(const NzCube<U>& rect);
 		NzCube(const NzCube& rect) = default;
 		~NzCube() = default;