Return non-nil from gnutls-available-p under GnuTLS 2.x

* doc/misc/emacs-gnutls.texi (Help For Users): Update the
documentation of 'gnutls-available-p'.

* etc/NEWS (GnuTLS): Mention the change in the value returned by
'gnutls-available-p'.

* src/gnutls.c (Fgnutls_available_p): Return non-nil when GnuTLS
2.x is available.  (Bug#29147)

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gnutls.c b/src/gnutls.c
index 36f65c4acb3..85cebd0e1c6 100644
--- a/src/gnutls.c
+++ b/src/gnutls.c
@@ -2422,6 +2422,8 @@ GnuTLS AEAD ciphers     : the list will contain `AEAD-ciphers'.  */)
 
 #ifdef HAVE_GNUTLS
 
+  capabilities = Fcons (intern("gnutls"), capabilities);
+
 # ifdef HAVE_GNUTLS3
   capabilities = Fcons (intern("gnutls3"), capabilities);
   capabilities = Fcons (intern("digests"), capabilities);