[bcc][faked-from] [development] Move multiple theme per site support to contrib module

[Mark Fredrickson]

>
> Also. completely getting rid of the tiered theme setting stuff, and  
> only having one set of settings, per theme (same with the block)


While we're on the subject of settings, I suggest giving themes more  
control over their settings. Something like hook_settings would be  
perfect, in fact. Let the theme designer implement a hook in  
template.php (for the PHPTemplate engine anyway, some other included  
code for other theme engines).

Use case: A theme that allows users to specify the widths of columns  
and then generates a dynamic or cached CSS file. Right now, the only  
way I could find to do this was to have a combination module and theme.

-M