Remove (RET)SIGTYPE; it is identical to void on all supported systems.

Ref: http://lists.gnu.org/archive/html/emacs-devel/2011-03/msg01068.html

* configure.in (AC_TYPE_SIGNAL): Remove obsolete macro.
(AH_BOTTOM): Do not define SIGTYPE.

* lib-src/emacsclient.c: Replace SIGTYPE with void.

* nt/config.nt: Remove RETSIGTYPE, SIGTYPE (identical to void).

* src/syssignal.h: Replace RETSIGTYPE with void.

* src/atimer.c, src/data.c, src/dispnew.c, src/emacs.c, src/floatfns.c:
* src/keyboard.c, src/keyboard.h, src/lisp.h, src/process.c, src/sysdep.c:
* src/xterm.c: Replace SIGTYPE with void everywhere.

* src/s/template.h (SIGTYPE): Remove commented out definition.
* src/s/usg5-4-common.h (SIGTYPE): Remove definition.

* admin/CPP-DEFINES: Remove SIGTYPE.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sysdep.c b/src/sysdep.c
index 14db0fd26d0..1bb400421f0 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -449,7 +449,7 @@ child_setup_tty (int out)
 struct save_signal
 {
   int code;
-  SIGTYPE (*handler) (int);
+  void (*handler) (int);
 };
 
 static void save_signal_handlers (struct save_signal *);
@@ -608,7 +608,7 @@ save_signal_handlers (struct save_signal *saved_handlers)
   while (saved_handlers->code)
     {
       saved_handlers->handler
-        = (SIGTYPE (*) (int)) signal (saved_handlers->code, SIG_IGN);
+        = (void (*) (int)) signal (saved_handlers->code, SIG_IGN);
       saved_handlers++;
     }
 }