MultiProcess branch mentioned in the wiki

[Pedro Alves]

I've finally drafted a wiki page for the multi-process / multi-exec work.  Check it out at:

 http://sourceware.org/gdb/wiki/MultiProcess

It's reachable through the OngoingWork link in the main page.

A lot of info missing there, particularly examples, and some HOWTOs; but, it captures what I consider the main TODO's for the moment.

Please, do feel free to extend / edit the page, and of course, to try things out and contribute to the project!

-- 
Pedro Alves