Maybe we should re-cut M5 branch?

[David Jencks]

So far all the changes in head since the branch need to go into M5 and 
AFAICT there are no M5 specific changes.  There are some tck-related 
problems pending but once those are fixed I wonder if it would be 
simpler to re-cut the M5 branch rather than port the changes into the 
branch?  If we decide to do this should we delete the current M5 branch 
now?

thanks
david jencks