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
System.out.println();
			}
			return IOperationHistory.OPERATION_INVALID_STATUS;
		}
		return doRedo(monitor, info, operation);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.operations.IOperationHistory#redoOperation(org.eclipse.core.commands.operations.IUndoableOperation,
	 *      org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 */
	public IStatus redoOperation(IUndoableOperation operation,
			IProgressMonitor monitor, IAdaptable info)
			throws ExecutionException {
		Assert.isNotNull(operation);
		IStatus status;
		if (operation.canRedo()) {
			status = getRedoApproval(operation, info);
			if (status.isOK()) {
				status = doRedo(monitor, info, operation);
			}
		} else {
			if (DEBUG_OPERATION_HISTORY_UNEXPECTED) {
				System.out
						.print("OPERATIONHISTORY >>> Redo operation not valid - ");  
				System.out.print(operation);
				System.out.println();
			}