[development] Move all core modules into their own directories.

[Dries Buytaert]

> > The disadvantages:
> >  * PHPTemplate would become more dominant.  It's not clear how this
> > can co-exist with other theme engines.
> Most of the other theme engines are just copy pastes of phptemplate,
> re-implementing
> one or two functions.
>
> I'll glady step up and work on the compatibility of theme engines ,
> and the interoperability
> with standard drupal themes (although in reality, everything will
> work as before).

It would be good if someone could look into this, and maybe tried to
make a script to auto-extract the theme_ functions and convert them to
.tmp.php files.  Like that, we could mess around with it and see if it
works or not.  Takers?

--
Dries Buytaert :: http://buytaert.net/