calc.el

calc.el
(calc-settings-file, calc-language-alist): Make customizable.
(calc-embedded-announce-formula, calc-embedded-open-formula)
(calc-embedded-close-formula, calc-embedded-open-word)
(calc-embedded-close-word, calc-embedded-open-plain)
(calc-embedded-close-plain, calc-embedded-open-new-formula)
(calc-embedded-close-new-formula, calc-embedded-open-mode)
(calc-embedded-close-mode, calc-gnuplot-name, calc-gnuplot-plot-command)
(calc-gnuplot-print-command): Move here from other files and make customizable.