PATCH: Make sure gdb-cfg.texi is created

[Eli Zaretskii]

> From: Andreas Schwab <schwab@suse.de>
> Date: Sat, 10 May 2003 17:39:04 +0200
> 
> `test -e' is POSIX, but not supported by some older shells (according to
> the autoconf docs Solaris 2.5 does not have it).

What version of POSIX standardizes it?  If Solaris 2.5 doesn't have
it, I'd be very uneasy about using it.  Did we discontinue support for
Solaris 2.5?