[RCD] [PATCH] plugin hook for adding SASL mechanisms for SMTP

Hello

Until now the only SASL mechanisms that were available for SMTP authentication were the one Net-SMTP provided. I just had a patch accepted in Net-SMTP SVN so that new mechanisms can be added on the fly. One do this by calling the new method:

    $conn->setAuthMethod('METHOD_NAME', array($object, $method));

or, without using object programming:

    $conn->setAuthMethod('METHOD_NAME', $callback);

In order to use that in RouncCube, we need a new hook so that plugins have the opportunity to register their method using Net_SMTP::setAuthMethod()

Here is the patch that does just that: http://ftp.espci.fr/shadow/manu/rcube.diff