Minor changes to math module

-Fixed missing Set method: "X::Set(const X&)"
-Removed operator String


Former-commit-id: 690f161704ed85fc57a62b812af7933e390572b5

include/Nazara/Math/Cube.inl

@@ -187,6 +187,14 @@ NzCube<T>& NzCube<T>::Set(const T cube[6])
 	return *this;
 }
 
+template<typename T>
+NzCube<T>& NzCube<T>::Set(const NzCube& cube)
+{
+	std::memcpy(this, &cube, sizeof(NzCube));
+
+	return *this;
+}
+
 template<typename T>
 NzCube<T>& NzCube<T>::Set(const NzRect<T>& rect)
 {
@@ -235,12 +243,6 @@ NzString NzCube<T>::ToString() const
 	return ss << "Cube(" << x << ", " << y << ", " << z << ", " << width << ", " << height << ", " << depth << ')';
 }
 
-template<typename T>
-NzCube<T>::operator NzString() const
-{
-	return ToString();
-}
-
 template<typename T>
 T& NzCube<T>::operator[](unsigned int i)
 {