* calc/calc.el: Load "cal-loaddefs" rather than set up autoloads manually.

* calc/calc.el: Load "cal-loaddefs" rather than set up autoloads manually.
(calc-mode-map, calc-digit-map, calc-dispatch-map):
Move initialization into declaration.
* calc/calc-yank.el:
* calc/calc-misc.el:
* calc/calc-embed.el:
* calc/calc-aent.el: Add autoload cookies and set generated-autoload-file.