bug#6207: 23.1; align.el vhdl rules setup

[Kevin Ryde]

align.el has some setups for vhdl-mode, but the way align.el adds to
vhdl-mode-hook means they only take effect in vhdl-mode buffers made
after align.el has loaded, whereas I hoped they would be always present.

Eg. the foo.vhd below

    emacs -Q foo.vhd
    M-x end-of-buffer
    M-x align

does nothing, but

    emacs -Q
    M-: (require 'align)
    C-x C-f foo.vhd
    M-x end-of-buffer
    M-x align

lines up the "signal" and "variable" expressions.

I see there's a comment in align.el that its vhdl stuff belongs in
vhdl-mode.el.  I suppose that would be the right way to do it.

(vhdl-mode has some of its own alignment, the align.el bits are separate
and don't interfere as far as I can tell.  From the comments I get the
impression align.el came afterwards, or some such.)


In GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.16.5)
 of 2009-09-14 on raven, modified by Debian
configured using `configure  '--build=i486-linux-gnu' '--host=i486-linux-gnu' 
'--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' 
'--localstatedir=/var/lib' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--with-pop=yes' 
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.1/leim'
 '--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars' 
'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g 
-O2' 'LDFLAGS=-g' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_AU
  value of $XMODIFIERS: nil
  locale-coding-system: iso-latin-1-unix
  default-enable-multibyte-characters: t