Do not wrap every subcommand

Sub-commands in libexec must use saturnin_wraphook if they want pre/post
hook, or may use saturnin_runhook to run their own hooks as they wish.

src/ffoo/saturnin_common.sh

@@ -55,7 +55,7 @@ saturnin_runsc() {
         saturnin_help
         return $FFOO_EXIT_USAGE
     }
-    saturnin_wraphook "$lexpath" "$@"
+    "$lexpath" "$@"
 }
 
 saturnin_wraphook() {

src/libexec/saturnin-au

@@ -4,6 +4,8 @@
 
 ffoo import pretty
 
+ffoo import saturnin_common
+
 
 usage() {
     mkusage "up"     \
@@ -99,6 +101,10 @@ debug "\$*='$*'"
 debug -v action
 
 case $action in
-    up|down|flip|mute|query|unmute) do_$action "$@" ;;
-    *)                              usage           ;;
+    up|down|flip|mute|query|unmute)
+        saturnin_wraphook "do_$action" "$@"
+        ;;
+    *)
+        usage
+        ;;
 esac