Use common hook mechanism for logging and status change announcing

src/libexec/saturnin-iam

@@ -6,6 +6,7 @@ ffoo import inigrep
 ffoo import pretty
 ffoo import sync
 
+ffoo import saturnin_common
 ffoo import saturnin_zleep
 
 
@@ -52,7 +53,8 @@ set_status() {
     # set public status $1 by command in conf file
     #
     local what=$1
-    inigrep -p iam.saying.like.this.$what | bash
+    saturnin_runhook say_$what
+    saturnin_runhook log_$what
 }