* Makefile.in (XGETTEXT, MSGMERGE, MSGFMT, LINGUAS): New variables. (po/$(PACKAGE).pot): Replace `xgettext' with `$(XGETTEXT)'. (po/*.po): Replace `msgmerge' with `$(MSGMERGE)'. (po/%.mo): Replace `msgfmt' with `$(MSGFMT)'. * po/LINGUAS: New file.