Bug 67726 Refactoring fails if validate edit returns a cancel status [refactoring]
org.eclipse.ltk.core.refactoring/src/org/eclipse/ltk/core/refactoring/RefactoringStatus.java
* If the current severity is <code>OK</code> it will be changed to <code>INFO
	 * </code>. It will remain unchanged otherwise.
	 * 
	 * @param msg the message of the info entry
	 * 
	 * @see RefactoringStatusEntry
	 */
	public void addInfo(String msg) {
		addInfo(msg, null);
	}
	/**
	 * Adds an <code>INFO</code> entry filled with the given message and context to 
	 * this status. If the current severity is <code>OK</code> it will be changed to 
	 * <code>INFO</code>. It will remain unchanged otherwise.
	 * 
	 * @param msg the message of the info entry
	 * @param context the context of the info entry
	 * 
	 * @see RefactoringStatusEntry
	 */
	public void addInfo(String msg, RefactoringStatusContext context) {
		fEntries.add(new RefactoringStatusEntry(RefactoringStatus.INFO, msg, context));
		fSeverity= Math.max(fSeverity, INFO);
	}
	/**
	 * Adds a <code>WARNING</code> entry filled with the given message to this status.
	 * If the current severity is <code>OK</code> or <code>INFO</code> it will be 
	 * changed to <code>WARNING</code>. It will remain unchanged otherwise.
	 * 
	 * @param msg the message of the warning entry