(ispell-local-dictionary-alist): New variable for

(ispell-local-dictionary-alist): New variable for
customizing local dictionaries not accessable by everyone.
(ispell-dictionary-alist): Loads `ispell-local-dictionary-alist'.
(ispell-required-version): Changed format `(major minor
revision)' to support general pattern matching.
(ispell-tex-skip-alists): AMS Tex block comment and `\author'
skip region commented out due to incorrect skip potential in std latex.
(ispell-word): Removed `when' macro.  Fixed bug of not restoring
cursor point on small words for calls from `ispell-minor-mode'.
(check-ispell-version): Tests and accepts versions major.minor
and above, with adjustments for interactions in 3.1.0-3.1.11.
(ispell-get-line): No longer skips ispell process special characters.
(ispell-comments-and-strings): Removed `when' macro call.
(ispell-minor-check): Requires ispell-word to restore cursor point.
(ispell-buffer-local-parsing): Supports checking comments only.