Convert more function definitions to standard C.

* src/xdisp.c (window_box_edges, handle_single_display_spec)
(display_string): Convert definition to standard C.
* src/scroll.c (do_direct_scrolling, scrolling_1):
* src/dispnew.c (allocate_matrices_for_frame_redisplay)
(mirrored_line_dance):
* src/coding.c (code_convert_string):
* src/charset.c (map_charset_chars):
* src/ccl.c (Fccl_program_p, Fccl_execute, Fccl_execute_on_string)
(Fregister_ccl_program, Fregister_code_conversion_map):
* src/keyboard.c (kbd_buffer_nr_stored): Likewise.
(head_table): Make static and const.

1 files changed, 2 insertions, 4 deletions

diff --git a/src/coding.c b/src/coding.c
index 44fb992d1a8..dcd31fe9f28 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -9017,10 +9017,8 @@ not fully specified.)  */)
 }
 
 Lisp_Object
-code_convert_string (string, coding_system, dst_object,
-                     encodep, nocopy, norecord)
-     Lisp_Object string, coding_system, dst_object;
-     int encodep, nocopy, norecord;
+code_convert_string (Lisp_Object string, Lisp_Object coding_system,
+                     Lisp_Object dst_object, int encodep, int nocopy, int norecord)
 {
   struct coding_system coding;
   EMACS_INT chars, bytes;