Fix handling of fatal signals and exceptions on MS-Windows.

 src/w32proc.c (sys_signal): Handle all signals defined by the
 MS-Windows runtime, not just SIGCHLD.  Actually install the signal
 handlers for signals supported by Windows.  Don't override
 term_ntproc as the handler for SIGABRT.
 (sigaction): Rewrite to call sys_signal instead of duplicating its
 code.
 (sys_kill): Improve commentary.
 src/w32.c (term_ntproc): Accept (and ignore) one argument, for
 consistency with a signature of a signal handler.  All callers
 changed.
 (init_ntproc): Accept an argument DUMPING.  If dumping, don't
 install term_ntproc as a signal handler for SIGABRT, as that
 should be done by the dumped Emacs.
 src/w32.h (init_ntproc, term_ntproc): Adjust prototypes.
 src/w32select.c (term_w32select): Protect against repeated
 invocation by setting clipboard_owner to NULL after calling
 DestroyWindow.
 src/emacs.c (shut_down_emacs, main): Adapt the calls to init_ntproc
 and term_ntproc to their modified signatures.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/w32.h b/src/w32.h
index 39409e38082..18625cea955 100644
--- a/src/w32.h
+++ b/src/w32.h
@@ -127,8 +127,8 @@ extern void reset_standard_handles (int in, int out,
 /* Return the string resource associated with KEY of type TYPE.  */
 extern LPBYTE w32_get_resource (char * key, LPDWORD type);
 
-extern void init_ntproc (void);
-extern void term_ntproc (void);
+extern void init_ntproc (int);
+extern void term_ntproc (int);
 extern void globals_of_w32 (void);
 extern void syms_of_w32term (void);
 extern void syms_of_w32fns (void);