Bug 117601 [Undo] - update org.eclipse.core.commands.operations to use new equinox common utils
org.eclipse.core.commands.operations.DefaultOperationHistory - synchronizes its own listener list org.eclipse.core.commands.internal.util. - implements its own Assert. These should be updated to use the new support in org.eclipse.equinox.common
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/operations/DefaultOperationHistory.java
operation.dispose();
			}
			
			
			notifyUndone(operation);
		} else {
			notifyNotOK(operation, status);
		}
		return status;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.operations.IOperationHistory#execute(org.eclipse.core.commands.operations.IUndoableOperation,
	 *      org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 */
	public IStatus execute(IUndoableOperation operation,
			IProgressMonitor monitor, IAdaptable info)
			throws ExecutionException {
		Assert.isNotNull(operation);
		
		if (!operation.canExecute()) {
			return IOperationHistory.OPERATION_INVALID_STATUS;
		}
		/*
		 * If we are in the middle of an open composite, then we will add this