adding a vfs.file.regcount

[frater]

I needed to see the occurences of a regular expression in a file for which I created my own function.
Could Zabbix be enhanced so it will support this natively?

This will make it cross-platform as a nice side-effect.

http://www.zabbix.com/forum/showthread.php?t=20224

I'm already using this for many applications.