Add --no-header to cron execution command

Without --no-header on every cron sarg execution, the php script outputs the line "Content-type: text/html". This will be emailed
nrpe server_address should be optional, so any bind works
Merge pull request #662 from mmoel/patch-1
move jail package bits to archive
fix duplicate definition of server_address
Merge pull request #663 from gitbensons/master