Require ngettext

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@844 f882894a-f735-0410-b71e-b25c423dba1c

configure.in

@@ -1420,7 +1420,7 @@ AC_SUBST(EXTRA_NETOBJS)
 AC_SUBST(DEPLIBS)
 
 AM_GNU_GETTEXT_VERSION(0.11.5)
-AM_GNU_GETTEXT
+AM_GNU_GETTEXT([no-libtool], [need-ngettext])
 
 AC_OUTPUT(Makefile lib/Makefile plugins/Makefile plugins-scripts/Makefile plugins-scripts/subst plugins-scripts/utils.pm plugins-scripts/utils.sh command.cfg test.pl pkg/solaris/pkginfo intl/Makefile po/Makefile.in )