Bug 96947 Bad progress reporting on rename method
org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/core/refactoring/PerformChangeOperation.java
private Change fChange;
	private CreateChangeOperation fCreateChangeOperation;
	private RefactoringStatus fValidationStatus;
	
	private Change fUndoChange;
	private String fUndoName;
	private IUndoManager fUndoManager;
	
	private boolean fChangeExecuted;
	private boolean fChangeExecutionFailed;
	
	/**
	 * Creates a new perform change operation instance for the given change.
	 * 
	 * @param change the change to be applied to the workbench
	 */