[Radiant] Alias Page Extension

[Daniel Sheppard]

> > (Note that I also had to have a custom index page so that it could  
> > look at my custom file not found type).
> 
> Wouldn't something like this in core be better? (COMPLETELY UNTESTED)
> 
> ----- 8< -----
> Index: page.rb
> ===================================================================
> --- page.rb     (revision 352)
> +++ page.rb     (working copy)

Yeah, I was thinking of putting pretty much that into the core, but was going to mull over it for a week to see if I could think of
something better. Something about using IN bothers me a little, but I don't think that feeling is justified (just a voice in the
back of my mind saying "OMG!! what if you have like a bajillion different not found page types? That would suck" - I try not to
listen to that voice though, he's a bit of a doofus).

Dan.