darcs patch: Support an interrupt flag, and primitive... (and 4 more)

[Tony Garnock-Jones]

Brian Rice wrote:
> The alpha repository now has a bootstrapped set of images and the new  
> VM sources, and has all the patches from main applied. It is as  stable 
> as it was before. ;)

Cool!

The next step toward getting some kind of gui going is to get the 
sockets code stable. Once we've got that stuff running, we can invert 
the control of the REPL, and hook in the SDL event stuff.

Tony