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)

src/Nazara/Core/String.cpp

@@ -4735,9 +4735,9 @@ NzString NzString::Number(unsigned long long number, nzUInt8 radix)
 
 NzString NzString::Pointer(const void* ptr)
 {
-	unsigned int size = sizeof(ptr)*2;
+	unsigned int size = sizeof(ptr)*2+2;
 	char* str = new char[size+1];
-	std::sprintf(str, "%p", ptr);
+	std::sprintf(str, "0x%p", ptr);
 
 	return NzString(new SharedString(1, size, size, str));
 }