Bug 27530 [Properties view] CopyPropertyAction does not dispose clipboard
build I20021127 CopyPropertyAction allocates a Clipboard but does not dipose it. Should add a dispose method here, and call it from PropertySheetPage.dispose().
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheetPage.java
}
						
						if (contexts[0] instanceof IContext) 
							WorkbenchHelp.displayHelp((IContext)contexts[0]);
						else
							WorkbenchHelp.displayHelp((String)contexts[0]);
						return;
					}
				}
				
				
				WorkbenchHelp.displayHelp(HELP_CONTEXT_PROPERTY_SHEET_PAGE);
			}
		});
	}
	/**
	 * The <code>PropertySheetPage</code> implementation of this <code>IPage</code> method 
	 * disposes of this page's entries.
	 */
	public void dispose() {
		super.dispose();
		if (rootEntry != null)
			rootEntry.dispose();
	}
	/**
	 * Returns the cell editor activation listener for this page
	 */
	private ICellEditorActivationListener getCellEditorActivationListener() {
		if (cellEditorActivationListener == null) {
			cellEditorActivationListener = new ICellEditorActivationListener() {