[development] let's cleanup /misc

[Jeff Eaton]

> > 3. sites/ has configuration files with multi site setup (hostname, 
> > default, ...etc.), in addition to an "all/" directory, which is
shared 
> > by all domains.
> 
> Now this is a valid idea -- maybe the site/default/modules and  
> site/default/themes should be included for every site? Oneliner patch.

Yeah, this is the one thing that's come up that multisite functionality
DOESN'T yet handle, and it would definitely be cool. The core /modules
directory etc could be kept completely clean.

--Jeff