Re: couple of warning fixes

[Akim Demaille]

| Automake just doesn't know anything about the `def' and `tpl'
| extensions.  (Am I wrong in putting such files in _SOURCES?)

No idea...

| The second patch below get rid of these warnings.
| 
| --- automake.in~      Sat May 19 23:40:55 2001
| +++ automake.in       Mon May 21 20:40:33 2001
| @@ -1498,7 +1498,7 @@ sub handle_languages
|      my $needs_c = 0;
|      foreach my $ext (sort keys %extension_seen)
|        {
| -     my $lang = $languages{$extension_map{$ext}};
| +     my $lang = $languages{$extension_map{$ext} || ''};

Huh???  This looks very wrong to me.  It should probably be something
like

        next
          unless $extension_map{$ext};

Actually, I'm frightened: how come Perl does not complain about
$languages{''}?  It is not supposed to exist.  Does it?