add a rapidly interactive register feature

* more convenient than existing register feature in register.el but
  the maxium number of register is 10.

* to store current point like (point-to-register), press "C-c P" which
  runs the command (jda-mark-vector-push)

* to move point like (jump-to-register), "C-c p" which runs the
  command (jda-mark-vector-pop)