bug#9360: 24.0.50; emacs-lisp-mode-abbrev-table neglected in emacs-lisp-mode

[Chong Yidong]

Stefan Monnier <monnier@IRO.UMontreal.CA> writes:

>> in fact it can be misleading to see emacs-lisp-mode-abbrev-table not working 
>> with emacs-lisp-mode. It's better to remove this table or explain how to use 
>> this abbrev table in emacs and elisp manuals. 
>
> The right thing to do is to make emacs-lisp-mode-abbrev-table work in
> emacs-lisp-mode.

I've checked in a fix.  Note that emacs-lisp-mode-abbrev-table now takes
lisp-mode-abbrev-table as its parent, in order for existing abbrevs to
continue working.