Added support for OpenGL debug mode

When NzContextParameters.debugMode is true, Nazara will receive OpenGL's
debug message and send them to Nazara's log
NzString::Pointer now have the "0x" prefix
Added support for ARB_texture_storage extension
Nazara now try to load core texture 3D before trying to load
EXT_texture3D
Added NazaraNotice macro, writing raw text into Nazara's log
Added NzContext::Destroy (called in Create)

include/Nazara/Renderer/ContextParameters.hpp

@@ -25,6 +25,7 @@ struct NAZARA_API NzContextParameters
 	shareContext(defaultShareContext),
 	window(defaultWindow),
 	compatibilityProfile(defaultCompatibilityProfile),
+	debugMode(defaultDebugMode),
 	doubleBuffered(defaultDoubleBuffered),
 	shared(defaultShared)
 	{
@@ -39,6 +40,7 @@ struct NAZARA_API NzContextParameters
 	const NzContext* shareContext;
 	NzWindowHandle window;
 	bool compatibilityProfile;
+	bool debugMode;
 	bool doubleBuffered;
 	bool shared;
 
@@ -47,6 +49,7 @@ struct NAZARA_API NzContextParameters
 	static const NzContext* defaultShareContext;
 	static NzWindowHandle defaultWindow;
 	static bool defaultCompatibilityProfile;
+	static bool defaultDebugMode;
 	static bool defaultDoubleBuffered;
 	static bool defaultShared;
 };