new [gzip-true parm will gzip traced message format on the wire
New UI checkbox enables user to capture stack trace of every 'exit' trace event.  This is useful for troubleshooting like this: http://johnsrandommusings.tumblr.com/post/33371606685/javadbb
Merge pull request #34 from eostermueller/exitStackTrace

"exitStackTrace" and "gzip" enhancements together in a single pull request.