Add manual pages for certficate/key loading and friends.

doc/ssl/ssl.pod

diff --git a/doc/ssl/ssl.pod b/doc/ssl/ssl.pod
index 87f698f..5f55cb6 100644
--- a/doc/ssl/ssl.pod
+++ b/doc/ssl/ssl.pod
@@ -650,12 +650,15 @@
 L<SSL_accept(3)|SSL_accept(3)>, L<SSL_clear(3)|SSL_clear(3)>,
 L<SSL_connect(3)|SSL_connect(3)>,
 L<SSL_CIPHER_get_name(3)|SSL_CIPHER_get_name(3)>,
+L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>,
 L<SSL_CTX_get_verify_mode(3)|SSL_CTX_get_verify_mode(3)>,
 L<SSL_CTX_load_verify_locations(3)|SSL_CTX_load_verify_locations(3)>
 L<SSL_CTX_new(3)|SSL_CTX_new(3)>,
-L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>
+L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>,
+L<SSL_CTX_set_default_passwd_cb(3)|SSL_CTX_set_default_passwd_cb(3)>,
 L<SSL_CTX_set_ssl_version(3)|SSL_CTX_set_ssl_version(3)>,
 L<SSL_CTX_set_verify(3)|SSL_CTX_set_verify(3)>,
+L<SSL_CTX_use_certificate(3)|SSL_CTX_use_certificate(3)>,
 L<SSL_get_ciphers(3)|SSL_get_ciphers(3)>,
 L<SSL_get_client_CA_list(3)|SSL_get_client_CA_list(3)>,
 L<SSL_get_error(3)|SSL_get_error(3)>, L<SSL_get_fd(3)|SSL_get_fd(3)>,