bug#13588: Pax hangs in case big UID

[Pavel Raiskup]

Stefano, this patch is quite hard to follow because of the new
indentation.  But both checks are saying PASS for me now.

I have found one possible problem (missing one line):

> -    done
> -    am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - 
> "'"$$tardir"'
> -    am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - 
> "'"$tardir"'
> -    am__untar="$_am_tar -xf -"

> +      done
> +      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - 
> "'"$$tardir"'
> +      am__untar="$_am_tar -xf -"

Don't know whether the check now works correctly.

Pavel