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.inl

@@ -33,6 +33,17 @@ depth(vec[5])
 {
 }
 
+template<typename T>
+NzCube<T>::NzCube(const NzRect<T>& rect) :
+x(rect.x),
+y(rect.y),
+z(0),
+width(rect.width),
+height(rect.height),
+depth(1)
+{
+}
+
 template<typename T>
 template<typename U>
 NzCube<T>::NzCube(const NzCube<U>& rect) :