[shell] Remove TMOUT setting.
[shell] Don't fiddle with ~/.fvwm/modules as I don't use FVWM any more.
[emacs] Migrate from obsolete symbols.

fill-paragraph-or-region has never been defined (or so it seems) and
instead fill-paragraph with third argument being t should be used to
get the effect of my previously open-coded fill-paragraph-or-region.

At the same time, thing-at-point-url-regex has been replaced with
ffap-url-regex so use whichcever is bound.
[emacs] Implement electric slash for sgml-mode.
[emacs] Don't use nxml-mode for HTML files any more.