Fix some more uses of int instead of EMACS_INT.

Fix some more uses of int instead of EMACS_INT.

 editfns.c (Fsubst_char_in_region, Ftranslate_region_internal)
 (check_translation): Use EMACS_INT for buffer positions and
 length.
 undo.c (record_marker_adjustment, record_delete)
 (record_change, record_point, record_insert)
 (record_property_change, Fprimitive_undo): Use EMACS_INT for
 buffer positions.
 lisp.h (record_marker_adjustment, record_delete)
 (record_change, record_point, record_insert)
 (record_property_change, Fprimitive_undo): Adjust prototypes.