Update XZ Utils to 5.0.3 (in deps)

src/xz/signals.c

Index: src/xz/signals.c
===================================================================
--- src/xz/signals.c	(revision 50504)
+++ src/xz/signals.c	(working copy)
@@ -71,6 +71,12 @@
 	for (size_t i = 0; i < ARRAY_SIZE(sigs); ++i)
 		sigaddset(&hooked_signals, sigs[i]);
 
+#ifdef SIGALRM
+	// Add also the signals from message.c to hooked_signals.
+	for (size_t i = 0; message_progress_sigs[i] != 0; ++i)
+		sigaddset(&hooked_signals, message_progress_sigs[i]);
+#endif
+
 	struct sigaction sa;
 
 	// All the signals that we handle we also blocked while the signal
@@ -142,12 +148,19 @@
 	const int sig = exit_signal;
 
 	if (sig != 0) {
+#if defined(TUKLIB_DOSLIKE) || defined(__VMS)
+		// Don't raise(), set only exit status. This avoids
+		// printing unwanted message about SIGINT when the user
+		// presses C-c.
+		set_exit_status(E_ERROR);
+#else
 		struct sigaction sa;
 		sa.sa_handler = SIG_DFL;
 		sigfillset(&sa.sa_mask);
 		sa.sa_flags = 0;
 		sigaction(sig, &sa, NULL);
 		raise(exit_signal);
+#endif
 	}
 
 	return;
@@ -166,7 +179,7 @@
 // console window.
 
 static BOOL WINAPI
-signal_handler(DWORD type lzma_attribute((unused)))
+signal_handler(DWORD type lzma_attribute((__unused__)))
 {
 	// Since we don't get a signal number which we could raise() at
 	// signals_exit() like on POSIX, just set the exit status to