calc/calc.el (calc-mode-var-list): Define this variable.

calc/calc.el (calc-mode-var-list): Define this variable.
(calc-always-load-extensions, calc-line-numbering,
calc-line-breaking, calc-display-just, calc-display-origin,
calc-number-radix, calc-leading-zeros, calc-group-digits,
calc-group-char, calc-point-char, calc-frac-format,
calc-prefer-frac, calc-hms-format, calc-date-format,
calc-float-format, calc-full-float-format, calc-complex-format,
calc-complex-mode, calc-infinite-mode, calc-display-strings,
calc-matrix-just, calc-break-vectors, calc-full-vectors,
calc-full-trail-vectors, calc-vector-commas, calc-vector-brackets,
calc-matrix-brackets, calc-language, calc-language-option,
calc-left-label, calc-right-label, calc-word-size,
calc-previous-modulo, calc-simplify-mode, calc-auto-recompute,
calc-display-raw, calc-internal-prec, calc-angle-mode,
calc-algebraic-mode, calc-incomplete-algebraic-mode,
calc-symbolic-mode, calc-matrix-mode, calc-shift-prefix,
calc-window-height, calc-display-trail, calc-show-selections,
calc-use-selections, calc-assoc-selections,
calc-display-working-message, calc-auto-why , calc-timing,
calc-mode-save-mode, calc-standard-date-formats,
calc-autorange-units, calc-was-keypad-mode, calc-full-mode,
calc-user-parse-tables, calc-gnuplot-default-device,
calc-gnuplot-default-output, calc-gnuplot-print-device,
calc-gnuplot-print-output, calc-gnuplot-geometry,
calc-graph-default-resolution, calc-graph-default-resolution-3d,
calc-invocation-macro, calc-show-banner): Give these values as
  part of `calc-mode-var-list's initialization after the variables
  are declared with defvar.