Add support for Double2/3/4 for Variant

Increase size to 40 bytes to store Double3 without allocations
Change Ray and BoundingBox to be stored inlined in BoundingBox
Use safer accessors to read Variant explicit data type

Source/Engine/Scripting/BinaryModule.cpp

@@ -53,6 +53,16 @@ const ScriptingType& ScriptingTypeHandle::GetType() const
     return Module->Types[TypeIndex];
 }
 
+#if USE_MONO
+
+MonoClass* ScriptingTypeHandle::GetMonoClass() const
+{
+    ASSERT_LOW_LAYER(Module && Module->Types[TypeIndex].ManagedClass);
+    return Module->Types[TypeIndex].ManagedClass->GetNative();
+}
+
+#endif
+
 bool ScriptingTypeHandle::IsSubclassOf(ScriptingTypeHandle c) const
 {
     auto type = *this;