build: correct gettext configure-time support

* configure.ac: Use AM_GNU_GETTEXT([external], [need-ngettext]),
rather than AM_GNU_GETTEXT([external], [need-formatstring-macros]).
Reported by Martin Jacobs in
http://thread.gmane.org/gmane.comp.parsers.bison.bugs/3181
* THANKS: Add his name.

1 files changed, 1 insertions, 0 deletions

diff --git a/THANKS b/THANKS
index e5fecb2ce..7955da76c 100644
--- a/THANKS
+++ b/THANKS
@@ -371,6 +371,7 @@ Martin                              martin@dresden.nacamar.de
 Martin Buck                         martin.buck@ascom.ch
 Martin Gallant                      martyg@goodbit.net
 Martin Hippe                        martin.hippe@schlund.de
+Martin Jacobs                       martin.jacobs@arcor.de
 Martin Michlmayr                    tbm@cyrius.com
 Martin Mitchell                     martin@debian.org
 Martin P.J. Zinser                  zinser@decus.de