Fix race-condition with create_swap.sh

Stupid code just relied on create_swap.sh taking a long time to execute.

scripts/firstrun

@@ -62,6 +62,7 @@ if [[ "$(apt-cache policy ramlog | grep Installed)" != "" ]]; then
 		fi
 	fi
 fi
+while [ -f /tmp/firstrun_running ]; do sleep 1; done
 if [ -f "/var/run/reboot" ]; then reboot; fi
 rm -f /tmp/create_swap.sh
 EOT
@@ -201,6 +202,7 @@ main() {
 	display_alert "Creating 128Mb emergency swap area"
 	display_alert "SSH keys recreation. One moment please"
 	display_alert "Updating packages"
+	touch /tmp/firstrun_running
 	/tmp/create_swap.sh &
 
 	if [ "X${HARDWARE}" = "Xsun8i" -o "X${HARDWARE}" = "Xsun7i" ]; then
@@ -209,6 +211,7 @@ main() {
 
 	update-rc.d -f firstrun remove >/dev/null 2>&1
 	sed -i 's/allow-hotplug\ eth0/auto eth0/' /etc/network/interfaces.default
+	rm /tmp/firstrun_running
 } # main
 
 main