* gnutls.c (Fgnutls_boot): Minor logging fixes.
Make gnutls.c compile on older gnutls installations

* gnutls.c (gnutls_certificate_details): Don't include certain
certificate details on older gnutls versions (bug#19168).
(syms_of_gnutls): Export gnutls_peer_status_warning_describe.
* net/nsm.el (nsm-format-certificate): Don't bug out on missing elements
(gnutls_certificate_details): Reversed check in last checkin.