[Cdash] CDash wiki install page

[Trevor Kellaway]

Bill,
 
> Those scripts are sort of huge...  Perhaps it would be better to make 
> them wiki attachments instead of inlined text.  It would make them 
> easier to use.  I suppose I could check in a version of those 
> files into 
> CDash svn and we could just reference them...

I didn't think they could be uploaded as wiki attachements? It looks
like only images and PDF uploads are permitted?

The actual trigger script is fairly small. I thought I'd upload them all
so at least everything needed was present in one place.

-Trev