Hi,
accoriding to discussion in gdb mailing list I have added stop-notes as 
mandatory part of MI trace-status command. This makes processing of 
stop-notes on IDE side more uniform with trace-notes processing. 
Previously Yao mentioned that he implemented notifications that can be 
used to monitor trace-status, but putting stop-notes to trace-status 
looks more clear way because processing one extra trace-status parameter 
defferently from others.

Stan, is it ok?

Thank you