dot/emacs, el/dot-emacs.el: Fix font configuration.

dot/emacs, el/dot-emacs.el: Fix font configuration.

Remove the unpleasant hacking with mdw-set-font and friends, and all of
the repeated font setting.  It doesn't work properly with Emacs 23,
because it can run in native frames and terminals simultaneously.

Instead, configure the fonts correctly at startup.  Unfortunately,
`defface' doesn't override the existing settings, so we hack the face
properties the hard way.  This actually seems to work, although it doesn't
have a particular right to.