PATCH: Make sure gdb-cfg.texi is created

[Eli Zaretskii]

> Date: Fri, 9 May 2003 12:24:34 -0700
> From: "H. J. Lu" <hjl@lucon.org>
> 
> +	  ln -s ${srcdir}/${DOC_CONFIG}-cfg.texi gdb-cfg.texi && \
> +	  test -e gdb-cfg.texi) || \

Is the `-e' option a standard option of `test' in the shell, or is it
some kind of extension?  I don't think we should use it unless it is
standard.