add setEngine()

src/java/ru/dmitriymx/lwjgl/tools/fontengine/GLText.java

@@ -13,7 +13,7 @@ public class GLText implements Renderable {
     private float[] color4f = new float[] { 1f, 1f, 1f, 1f };
 
     public GLText(String string, FontEngine engine) {
-        this.engine = engine;
+        setEngine(engine);
         setString(string);
     }
 
@@ -41,6 +41,10 @@ public class GLText implements Renderable {
         return engine;
     }
 
+    public void setEngine(FontEngine engine) {
+        this.engine = engine;
+    }
+
     @Override
     public String toString() {
         return getClass().getCanonicalName() + "[" + getString() + "]";