* src/keyboard.c (requeued_events_pending_p): New function

* src/keyboard.c (requeued_events_pending_p): New function

* src/keyboard.c, src/keyboard.h (requeued_events_pending_p): Add
function 'requeued_events_pending_p' (whose name was made available in
the previous commit). As opposed to the previous function with the same
name, the new function covers both command and other events.
* src/keyboard.c (Finput_pending_p): Use the new function.

(cherry picked from commit d6f326452ecc761498d627a365c8014a467812eb)