Moved per user post install actions to first-login script.

* The same mechanism (and the same PostInstallScript) is used for this.
* If a file first_login exists in ~/config/settings/boot, the first-login
  scripts are launched, and the file removed.
* This fixes adding the deskbar tray icons even when there is no Deskbar
  running yet (for example on first boot when the FirstBootPrompt
  starts), or, IOW bug #12275.

data/system/boot/PostInstallScript

@@ -2,17 +2,16 @@
 
 # Check for fresh install and run post install scripts.
 
-freshInstallIndicator=/boot/system/settings/fresh_install
-postInstallDir=boot/post-install
-if [ -e $freshInstallIndicator ]; then
-	# wait a moment for things to calm down a bit
-	sleep 3
+title=$1
+freshInstallIndicator=$2
+postInstallDir=$3
 
+if [ -e $freshInstallIndicator ]; then
 	# execute scripts
-	for f in /boot/system/$postInstallDir/*.sh
+	for f in $postInstallDir/*.sh
 	do
 		if [ -f $f ]; then
-			echo "Running post install script $f ..." > /dev/dprintf
+			echo "Running $title script $f ..." > /dev/dprintf
 			$f
 		fi
 	done