New stack trace code

[Andrew Haley]

Bryce McKinlay writes:
 > Andrew Haley wrote:
 > 
 > >Bryce McKinlay writes:
 > > > 
 > > > I am hoping to get this into the 4.0 branch, as the user-visible 
 > > > improvements are quite substantial. However since its such a big patch I 
 > > > am only committing to mainline at the moment - this should give it a 
 > > > chance for any serious bugs to be identified.
 > >
 > >OK.  I need to test it with jonas to see what happens.  I'll report
 > >back.
 > >
 > Sounds good. But do you want me to hold off committing to HEAD as well?

Hmm, good question.  It all depends on whether we come across any
sever performance regressions.  If we do, and they can't be fixed with
the new infrastructure, it might be necessary to revert.
 
 > I think its probably better to get it in to HEAD asap, any bugs 
 > affecting Jonas ought to be pretty easy to fix in there.

OK.

Andrew.