(ispell-current-personal-dictionary): New variable.
(ispell-start-process): Set that variable.
Clear ispell-buffer-local-name.
(ispell-internal-change-dictionary):
Set ispell-current-dictionary after killing process.
(ispell-buffer-local-dict):
Don't set spell-personal-dictionary after killing process.
(ispell-buffer-local-words): Don't clear out ispell-buffer-local-name.
(ispell-tex-skip-alists)
(ispell-html-skip-alists, ispell-skip-region-alist): Mark as risky.