(ispell-dictionary-alist-1)

(ispell-dictionary-alist-1)
(ispell-dictionary-alist-2, ispell-dictionary-alist-3):
(ispell-dictionary-alist-4, ispell-dictionary-alist-5):
(ispell-dictionary-alist-6): Remove.
(ispell-dictionary-base-alist): New var, merges the above.
(ispell-find-aspell-dictionaries, ispell-set-spellchecker-params): Use it.
(ispell-dictionary-alist): Default to nil.  Remove autoload.
(ispell-local-dictionary-alist): Remove autoload.