New functions for sslinfo extension

<div><div>Hello,</div><div> </div><div>I make an a patch, which adds 4 functions to sslinfo extension
module:</div><div><div>1)ssl_get_count_of_extensions() --- get count of X509v3 extensions from client
certificate;</div><div>2)ssl_get_extension_names() --- get short names of X509v3 extensions from client
certificate;</div><div>3)ssl_get_extension_value(text) --- get value of extension from certificate (argument --- short
nameof extension);</div><div>4) ssl_is_critical_extension(text) --- returns true, if extension is critical and false,
ifis not (argument --- short name of extension).</div><div> </div></div><div>You can view some information of
certificate'sextensions via those functions.</div><div>I want, that my functions will be included in PostgreSQL
release.</div><div> </div><div>Whatdo you think about it?</div><div> </div><div>-- <br />Best regards, Dmitry
Voronin</div></div><div> </div>