Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/LibraryRecord.java
protected Map overriddenValues = null;
	/**
	 * Constructs the library record.
	 * 
	 * @param module
	 *            the module
	 * @param library
	 *            the library to add/drop
	 * @param add
	 *            whether the given library is for adding
	 */
	LibraryRecord( Module module, Library library, boolean add )
	{
		super( module, library );
		this.add = add;
	}
	/**
	 * Constructs the library record. Only for adding library.
	 * 
	 * @param module
	 *            the module
	 * @param library
	 *            the library to add/drop
	 * @param values
	 *            the cached overridden values when removing a library
	 */
	LibraryRecord( Module module, Library library, Map values )
	{
		this( module, library, true );
		overriddenValues = values;