Revocation plugin for the openvpn web gui

This plugin allows to revoke certificates from the openvpn web gui. To use it
please edit revokecrt/local.inc configuration file first. Then enable plugin 
in the config.inc and use item "Revoke Certificate" from the certificate menu.

You should have working openssl binary, because it is not possible to use
openssl php extension to revoke  certificate file. Possibly this plugin will
fail with PHP Safe mode.

Author: Alex Samorukov, samm@os2.kiev.ua
