GlobalProtect gateway authorization fails

[O. William McClung]

Git commit 0fc967c3 works for me.

For me,

$ gp-saml-gui -p --clientos=Windows <my-vpn> -- --authgr='US Central'

produces the CLI command which I copy and paste into another terminal
window, changing 'openconnect' to the absolute path of the POSIX shell
script openconnect. A wrapper script will be next.

Many thanks to all OpenConnect developers. Without it, I simply
couldn't VPN to my box at my institution.