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/Core/Win32/ThreadImpl.cpp

@@ -65,7 +65,7 @@ void NzThreadImpl::Terminate()
 		TerminateThread(m_thread, 0);
 }
 
-unsigned int _stdcall NzThreadImpl::ThreadProc(void* userdata)
+unsigned int __stdcall NzThreadImpl::ThreadProc(void* userdata)
 {
 	NzThread* owner = reinterpret_cast<NzThread*>(userdata);
 	NzFunctor* func = owner->m_func;

src/Nazara/Core/Win32/ThreadImpl.hpp

@@ -29,7 +29,7 @@ class NzThreadImpl
 		void Terminate();
 
 	private:
-		static unsigned int _stdcall ThreadProc(void* userdata);
+		static unsigned int __stdcall ThreadProc(void* userdata);
 
 		HANDLE m_thread;
 		unsigned int m_threadId;