Mac .pkg building using Packages (third party app) instead of old bootstrapping .app and installer script.

ext/installfiles/mac/postinst.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+export PATH=/bin:/usr/bin:/sbin:/usr/sbin
+
+launchctl unload /Library/LaunchDaemons/com.zerotier.one.plist >>/dev/null 2>&1
+sleep 1
+killall zerotier-one
+sleep 1
+killall -9 zerotier-one
+
+cd "/Library/Application Support/ZeroTier/One"
+rm -rf node.log node.log.old root-topology shutdownIfUnreadable autoupdate.log updates.d
+if [ ! -f authtoken.secret ]; then
+	head -c 1024 /dev/urandom | md5 | head -c 24 >authtoken.secret
+	chown root authtoken.secret
+	chgrp wheel authtoken.secret
+	chmod 0600 authtoken.secret
+fi
+
+launchctl load /Library/LaunchDaemons/com.zerotier.one.plist >>/dev/null 2>&1
+
+exit 0