RFR(XXS): 8007150 Event based tracing is missing truncated field in stack trace content type

[Erik Gahlin]

Hi,

Could you please review this small change to the metadata for StackTrace 
content type, used by the event tracing framework. A boolean flag has 
been added so it's possible to see if a stack trace has been truncated 
(not all frames included).

http://cr.openjdk.java.net/~egahlin/8007150_1/

The fix is targeted for hs24.

Thanks
Erik