[m-rev.] for review: fix problems with recent versions of autoconf

[Zoltan Somogyi]

2021-05-23 20:45 GMT+10:00 "Julien Fischer" <jfischer at opturion.com>:
> This doesn't really require a review since the changes are trivial.
> However, since it does bump our minimum supported version of autoconf
> I need to ask: does anyone object to requiring at least version 2.69
> of autoconf?

Not from me.

Zoltan.