Working in minimal hunspell support for ispell.el

[Agustin Martin]

Hi,

I have been doing some work for a minimal hunspell support in ispell.el,
mostly to use "-i" option and not using "-m" which for hunspell means
different. These changes should work in recent hunspell, and if failing in
older ones will at least give an error instead of causing emacs get
stalled, as now happens. hunspell had some recent regressions in the "-a"
pipe interface, so not so recent versions will fail, but will at least
complain.

I am still pending of some final checks, but plan to commit soon.

My current changes do not check hunspell versions. I have been doing some
work in parallel for that in ispell-check-version. ispell/aspell/hunspell
versioning is pretty simple, so I am considering rewriting part of
ispell-check-version to be more clear to me, and use a ispell-check-minver
comparison function that, for emacs23, will be aliased to version<=. If
version<= is not bound I am writing a fallback definition supported by
emacs21 and xemacs, intended to keep smaller my Debian changes to pristine
ispell.el.

Cheers,

-- 
Agustin