Enabled openssh crypto so that hybrid mode will be supported
Mask version to fool silly cisco server

Idea gleaned from
http://web.archive.org/web/20100420090809/http://www.gerzic.net/docs/vpnc-tips.txt
Updated vpn-script

The version of vpn-script that ships with this repo is out of date.
Grabbed the latest and greatest from
http://git.infradead.org/users/dwmw2/vpnc-scripts.git/blob_plain/HEAD:/vpnc-script