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
*/
	private IStatus getRedoApproval(IUndoableOperation operation,
			IAdaptable info) {
		
		
		
		final IOperationApprover[] approverArray = (IOperationApprover[]) approvers
				.toArray(new IOperationApprover[approvers.size()]);
		for (int i = 0; i < approverArray.length; i++) {
			IOperationApprover approver = approverArray[i];
			IStatus approval = approver.proceedRedoing(operation, this, info);
			if (!approval.isOK()) {
				if (DEBUG_OPERATION_HISTORY_APPROVAL) {
					System.out
							.print("OPERATIONHISTORY >>> Redo not approved by ");  
					System.out.print(approver);
					System.out.print("for operation ");  
					System.out.print(operation);
					System.out.print(approval);
					System.out.println();
				}
				return approval;
			}
		}
		return Status.OK_STATUS;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.operations.IOperationHistory#getRedoHistory(org.eclipse.core.commands.operations.IUndoContext)