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

src/Nazara/Renderer/RenderWindow.cpp

@@ -80,8 +80,7 @@ bool NzRenderWindow::CopyToImage(NzImage* image)
 	nzUInt8* pixels = image->GetPixels();
 	glReadPixels(0, 0, size.x, size.y, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 
-	for (unsigned int j = 0; j < size.y/2; ++j)
-		std::swap_ranges(&pixels[j*size.x*4], &pixels[(j+1)*size.x*4-1], &pixels[(size.y-j-1)*size.x*4]);
+	image->FlipVertically();
 
 	return true;
 }