redo relaxed validation

diylc/diylc-library/src/org/diylc/components/Abstract3LegSymbol.java

@@ -263,6 +263,11 @@ public abstract class Abstract3LegSymbol extends AbstractComponent<String> {
   @Override
   public boolean canPointMoveFreely(int pointIndex) {   
     return pointIndex == 3;
+  }
+  
+  @Override
+  public boolean canControlPointOverlap(int index) {
+    return index >= 3;
   }
 
   @EditableProperty

diylc/diylc-library/src/org/diylc/components/AbstractLeadedComponent.java

@@ -536,6 +536,11 @@ public abstract class AbstractLeadedComponent<T> extends AbstractTransparentComp
   public VisibilityPolicy getControlPointVisibilityPolicy(int index) {
     return getMoveLabel() || index < 2 ? VisibilityPolicy.ALWAYS : VisibilityPolicy.NEVER;
   }
+  
+  @Override
+  public boolean canControlPointOverlap(int index) {
+    return index >= 2;
+  }
 
   @Override
   public void setControlPoint(Point point, int index) {