Fix some wrong escapeshellarg() calls
Add escapeshellarg() calls on exec parameters. While I'm here, replace some exec() calls by php functions like symlink, copy, unlink, mkdir
Add {} between variables inside quotes
Use the pid of the process for the tmp file also prepend ovpn_ here to make it clear
Fix cisco-avpair processing, and route processing from avpair replies.
Remove left-over from copy-pasto
Import OpenVPN cisco style radius attributes applying policy to logged in users. Feature #2100