Improved claws-mail to use gnutls if available

Note: This will disable openssl support, even if it is available!

mail/claws-mail/claws-mail.conf

@@ -22,6 +22,12 @@ else
 	var_append confopt ' ' "--disable-libsm"
 fi
 
+# gnutls support
+if pkginstalled gnutls ; then
+	pkgprefix -t gnutls
+	var_append confopt ' ' "--enable-gnutls"
+fi
+
 if pkginstalled openldap ; then
 	pkgprefix -t openldap
 	LDAPLIBS="$root/$( pkgprefix libdir openldap )"