(display-time-hook, timeclock-modeline-display): Define for byte-compiler.

(display-time-hook, timeclock-modeline-display): Define for byte-compiler.
(timeclock-time-to-date, timeclock-workday-remaining)
(timeclock-time-to-seconds, timeclock-seconds-to-time): Move earlier
in the file so defined before used.
(timeclock-status-string): No need for `let*' so use `let'.
(timeclock-query-out): Always return a non-nil value.