[RFC] Enhanced Garbage Collection Probe Points

[Jon VanAlten]

> 
> > > Is this ok to commit?
> > > 
> > 
> > With caveats noted above, I say yes :)
> > 
> 
> Thanks! Please let me know if there is anything else you'd like to
> know,
> updated patch is attached.
> 

Hi,

This has been in my TODO for some time, so I am very sorry not to
have responded earlier.  From looking at the patch, it seems okay
now.  I intend to push this to HEAD on your behalf, unless someone
else has some reason why not.  (Now is your chance to speak up
about that, if you have such a reason!).  But, I do feel responsible
to build with it myself and verify that things seem to be working as
intended.  Various other things have been jumping my work queue, but
I may have time this week to give this a sanity check and finally
get it into hg.  Thanks for persisting!

cheers,
jon