Translations issue with 1.5.3 tarball

xfce4-taskmanager built from xfce4-taskmanager-1.5.3.tar.bz2 does not display translated strings on non-English locales. Comparing the configure script from the tarball with the one generated by xdt-autogen (4.16.0) the former appears to be missing a lot of gettext-related functionality.

For example, these substitution variables are not defined in the tarball configure:

@@ -714,6 +714,20 @@ X_PRE_LIBS
 X_CFLAGS
 CPP
 XMKMF
+XGETTEXT_ARGS
+MKINSTALLDIRS
+POSUB
+POFILES
+PO_IN_DATADIR_FALSE
+PO_IN_DATADIR_TRUE
+INTLLIBS
+INSTOBJEXT
+GMOFILES
+DATADIRNAME
+CATOBJEXT
+CATALOGS
+MSGFMT_OPTS
+INTL_MACOSX_LIBS
 GETTEXT_PACKAGE
 ALL_LINGUAS
 INTLTOOL_PERL