(math-fd-date, math-fd-dt, math-fd-year, math-fd-month)

(math-fd-date, math-fd-dt, math-fd-year, math-fd-month)
(math-fd-day, math-fd-weekday, math-fd-hour, math-fd-minute)
(math-fd-second, math-fd-bc-flag): New variables.
(math-format-date, math-format-date-part): Replace variables
date, dt, year, month, day, weekday, hour, minute, second and
bc-flag by declared variables.

(math-pd-str): New variable.
(math-parse-date, math-parse-date-word, math-parse-standard-date):
Replace variable str by declared variable.

(math-daylight-savings-hook, math-tzone-names): Move definitions
to earlier in the file.

(var-TimeZone): Declare it.

(math-exp-str, math-exp-pos): Declare them.

(math-sh-year): New variable.
(math-setup-add-holidays, math-setup-holidays)
(math-setup-year-holiday): Replace variable `year'
by declared variable.