New functions

<div><pre>Hello,
</pre><pre>I make an a patch, which adds 4 functions to sslinfo extension module:<br />1) ssl_extension_names() --- get
shortnames of X509v3 extensions from client certificate and it's values;
 
2) ssl_extension_value(text) --- get value of extension from certificate (argument --- short name of extension);
3) ssl_extension_is_critical(text) --- returns true, if extension is critical and false, if is not (argument --- short
nameof extension).
 

You can view some information of certificate's extensions via those functions.

What do you think about it?</pre></div><div>-- </div><div>Best regards, Dmitry Voronin</div><div> </div>