Simplify redefinition of 'abort' (Bug#12316).

Do not try to redefine the 'abort' function.  Instead, redo
the code so that it calls 'emacs_abort' rather than 'abort'.
This removes the need for the NO_ABORT configure-time macro
and makes it easier to change the abort code to do a backtrace.
* configure.ac (NO_ABRT): Remove.
* admin/CPP-DEFINES (NO_ABORT): Remove.
* nt/inc/ms-w32.h (w32_abort) [HAVE_NTGUI]: Remove.
* src/.gdbinit: Just stop at emacs_abort, not at w32_abort or abort.
* src/emacs.c (abort) [!DOS_NT && !NO_ABORT]:
Remove; sysdep.c's emacs_abort now takes its place.
* src/lisp.h (emacs_abort): New decl.  All calls from Emacs code to
'abort' changed to use 'emacs_abort'.
* src/msdos.c (dos_abort) [defined abort]: Remove; not used.
(abort) [!defined abort]: Rename to ...
(emacs_abort): ... new name.
* src/sysdep.c (emacs_abort) [!HAVE_NTGUI]: New function, taking
the place of the old 'abort' in emacs.c.
* src/w32.c, src/w32fns.c (abort): Do not #undef.
* src/w32.c (emacs_abort): Rename from w32_abort.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/menu.c b/src/menu.c
index 20770537326..bfdc68ca118 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -733,7 +733,7 @@ digest_single_submenu (int start, int end, int top_level_items)
 
           /* All items should be contained in panes.  */
           if (panes_seen == 0)
-            abort ();
+            emacs_abort ();
 
           item_name = AREF (menu_items, i + MENU_ITEMS_ITEM_NAME);
           enable = AREF (menu_items, i + MENU_ITEMS_ITEM_ENABLE);
@@ -807,7 +807,7 @@ digest_single_submenu (int start, int end, int top_level_items)
           else if (EQ (type, QCtoggle))
             wv->button_type = BUTTON_TYPE_TOGGLE;
           else
-            abort ();
+            emacs_abort ();
 
           wv->selected = !NILP (selected);
           if (! STRINGP (help))