-- PLEASE NOTICE ---> this version is meant to coexist with autoconf-2.13
(for backwards compatibility); to that end, the various binaries are
actually linked to a script which decides which version to execute.
This version (>= 2.5x) is always executed, unless pre-generated `configure'
script exists and is generated by autoconf 2.13. You can also manually
select older version by setting the environment variable WANT_AUTOCONF_2_1
to `1'. The variable WANT_AUTOCONF_2_5 has no effect now.