'autoconf2.13' is old and obsolete version. We still have 'autoconf'
package that is newer version 2.69. I think the old version was needed
until some packages updated their configure.ac as there was some
incompatible changes around 2.13 time.
Are you saying you need to old version still? Or are you good with the
i misread the original commit message as "autoconf", not "autoconf2.13".
sorry for the noise. i have no need for the older autoconf2.13.