gettextize canned output

[Karl Berry]

It would be helpful if gettextize did even more checking about what the
maintainer was supposed to.  As in:

    Please update po/Makevars so that it defines all the variables mentioned
    in po/Makevars.template.
    You can then remove po/Makevars.template.

if cmp -s po/Makevars po/Makevars.template; then :; else
  <message above>
fi

    You will also need config.guess and config.sub, which you can get from
    ftp://ftp.gnu.org/pub/gnu/config/.

if test -r config.guess && test -r config.sub; then :; else
  <message above>
fi

    You might also want to copy the convenience header file gettext.h
    from the /usr/local/gnu/share/gettext directory into your package.
    It is a wrapper around <libintl.h> that implements the configure
    --disable-nls option.

if test -r gettext.h || test -r */gettext.h; then :; else
  <message above>
fi

Thanks,
karl