configure --sysconfdir=/.. broken

[Mark Kettenis]

   From: Andreas Jaeger <aj@suse.de>
   Date: 07 Jun 2000 16:36:32 +0200

   We've got a bug report that --sysconfdir=/some-dir isn't honoured at
   all.  Looking at the configure files, I noticed:

   AC_SUBST(libc_cv_slibdir)
   AC_SUBST(libc_cv_localedir)
   AC_SUBST(libc_cv_sysconfdir)
   AC_SUBST(libc_cv_rootsbindir)

   But these are never set.  I'm appending a patch to fix this for
   sysconfdir.  May I commit this?

No!  Take a look at sysdeps/unix/sysv/linux/configure.in.  The
libc_cv_ variables are set there.

Mark