Update ChangeLog and bump version for v4.16 release

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

configure.ac

@@ -1,4 +1,4 @@
-AC_INIT([Finit], [4.16-rc1], [https://github.com/finit-project/finit/issues],
+AC_INIT([Finit], [4.16], [https://github.com/finit-project/finit/issues],
 	[finit], [https://http://finit-project.github.io/])
 AC_CONFIG_AUX_DIR(aux)
 AM_INIT_AUTOMAKE([1.11 foreign subdir-objects])

doc/ChangeLog.md

@@ -3,7 +3,7 @@ Change Log
 
 All relevant changes are documented in this file.
 
-[4.16][] - 2026-02-28
+[4.16][] - 2026-02-27
 ---------------------
 
 ### Changes

src/sm.h

@@ -24,9 +24,9 @@
 #ifndef FINIT_SM_H_
 #define FINIT_SM_H_
 
-/* Set to 1 to enable shutdown trace logging (independent of 'initctl debug') */
+/* Set to 1 to trace shutdown (independent of 'initctl debug') */
 #ifndef SHUTDOWN_DEBUG
-#define SHUTDOWN_DEBUG 1
+#define SHUTDOWN_DEBUG 0
 #endif
 
 void sm_init      (void);