Bug 146976 Save state of the report not correct.
Reproduce: 1) New a library "lib1", add a label "label1" 2) Publish "lib1" 3) New a report "report1", use "lib1" 4) Drag "lib1.label1" into "report1" 5) Go back to "lib1", drop "label1", save and publish again. 6) Go to "report1", refresh the libaray explorer and design. 7) Save "report1" 8) Now, we go back to "lib1" 9) Undo the previous "delete command", "label1" is added back. 10) Save "lib1", and re-publish. 11) Go to "report1", refresh the libaray explorer and design. 12) Save "report1" At this stage, "report1" is saved, but the dirty indicator(*) still displayed in the left side of the report name. I am testing on build N20060613
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/activity/ActivityStack.java
* are of type Listener. Created only when needed.
	 */
	protected ArrayList listeners = null;
	/**
	 * Default constructor.
	 */
	public ActivityStack( )
	{
	}
	/**
	 * Executes the specified extended element command. The command must be
	 * ready to execute. As noted above, any required checks must have already
	 * been done. Flushes the redo stack.
	 * 
	 * @param command
	 *            the ActivityRecord to execute
	 */
	public void execute( IElementCommand command )
	{
		ExtensionActivityRecord record = new ExtensionActivityRecord( command );
		
		execute( record );
	}
	/**
	 * Executes the specified record. The record must be ready to execute. As
	 * noted above, any required checks must have already been done. Flushes the
	 * redo stack.
	 * 
	 * @param executeRecord
	 *            the ActivityRecord to execute