Fix unwanted extra rotations when translating rotated func_static

When Doom3Group and Doom3GroupNode were merged, all of the methods from
Doom3Group were moved into Doom3GroupNode. Two of these methods were
revertTransform() and freezeTransform(), which had the same name as virtuals on
the Transformable interface and therefore became unintentional overrides,
obliterating important functionality from Transformable which we still need in
Doom3GroupNode.

The fact that these methods triggered a "missing override keyword" warning
ought to have been an important red flag, but unfortunately I just mechanically
added the keyword without considering if these new methods actually *should*
have been overriding anything.

radiantcore/entity/doom3group/Doom3GroupNode.cpp

@@ -372,7 +372,7 @@ void Doom3GroupNode::_onTransformationChanged()
 			child.revertTransform();
 		});
 
-        revertTransform();
+        revertTransformInternal();
 
 		evaluateTransform();
 
@@ -382,7 +382,7 @@ void Doom3GroupNode::_onTransformationChanged()
 	else
 	{
 		// It's a model
-		revertTransform();
+		revertTransformInternal();
 		evaluateTransform();
 		updateTransform();
 	}
@@ -393,9 +393,9 @@ void Doom3GroupNode::_onTransformationChanged()
 
 void Doom3GroupNode::_applyTransformation()
 {
-	revertTransform();
+	revertTransformInternal();
 	evaluateTransform();
-	freezeTransform();
+	freezeTransformInternal();
 
 	if (!isModel())
 	{
@@ -527,7 +527,7 @@ void Doom3GroupNode::snapto(float snap)
 	m_originKey.write(_spawnArgs);
 }
 
-void Doom3GroupNode::revertTransform()
+void Doom3GroupNode::revertTransformInternal()
 {
 	m_origin = m_originKey.get();
 
@@ -544,7 +544,7 @@ void Doom3GroupNode::revertTransform()
 	m_curveCatmullRom.revertTransform();
 }
 
-void Doom3GroupNode::freezeTransform()
+void Doom3GroupNode::freezeTransformInternal()
 {
 	m_originKey.set(m_origin);
 	m_originKey.write(_spawnArgs);

radiantcore/entity/doom3group/Doom3GroupNode.h

@@ -175,8 +175,8 @@ class Doom3GroupNode :
 	void translate(const Vector3& translation);
 	void rotate(const Quaternion& rotation);
 	void scale(const Vector3& scale);
-	void revertTransform() override;
-	void freezeTransform() override;
+	void revertTransformInternal();
+	void freezeTransformInternal();
 
 	// Translates the origin only (without the children)
 	void translateOrigin(const Vector3& translation);
@@ -188,8 +188,6 @@ class Doom3GroupNode :
 	// Returns TRUE if this D3Group is a model
 	bool isModel() const;
 
-	void setTransformChanged(Callback& callback);
-
 public:
 
 	void nameChanged(const std::string& value);