[platform-debug-dev] Update on request to change threadID to string

[boxall@xxxxxxxxxx]

It turns out that thread priorities on Intel platforms are not numeric.
They have a class and number.   The class of the priority can be "High" or
"Low" etc.

I also need to allow engines to display "unknown" when the thread is in an
unknown state.   Displaying a valid number for the thread priority in these
cases will be misleading.

Alan Boxall - IBM Distributed Debugger
D1/121/8200/MKM
internet id : boxall@xxxxxxxxxx
Notes: Alan Boxall/Toronto/IBM @ IBMCA
Phn:(905)413-4117   T.L. 969-4117
Fax:(905)413-4850   T.L. 969-4850