X11R7 failure

[Chong Yidong]

I just got a build failure report from one of the pretesters:

> I have just looked at the failure to build it on NetBSD 5.0.2
> AMD64, our first system with X11R7.  The configure script fails to
> detect the presence of X11 libraries, even though they are present:
>
> % ls -1 /usr/X11R7/lib/lib* | wc -l
> 323

I don't know if there is anything we can do about this, since the X11
checks are made by Autoconf.  We're using Autoconf 6.2 for emacs-23, but
glancing at the output of Autoconf 6.5 from the trunk, looks like it
doesn't look for /usr/X11R7 either.

I'm not using X11R7 yet, but my impression was that it isn't supposed to
live under /usr/X11R7, but directly in /usr.  Does anyone know what the
situation is?