Re: Correct expansion of auxdir; have missing use it

[Tim Van Holder]

> Ok, thanks.  Keep us posted.  FWIW I imagine this problem must affect
> things in autoconf as well.  Maybe someone on the autoconf list has
> already run into the problem and diagnosed it.

It doesn't affect autoconf itself, as that uses slightly older copies
of automake's m4 macros (no AUX_DIR_EXPAND yet).  In any case, there
have been no reports of it on the autoconf list.
It's all very strange - I changed auxdir.m4 back to the non-subshell
version and configure now no longer complains.  Maybe it was the
test in PROG_MISSING that caused the failure, but I don't see how
that differed (note that having that use $am_aux_dir is definitely
TRT IMO).

BTW - for the trunk, I'd recommend changing occurrences of

  CDPATH=:

to

  CDPATH="$ac_path_separator"

(I'm assuming that 1.6 and above will require autoconf 2.50 or above).