Updated: autoconf2.7-2.72-1

[ASSI]

Autoconf has been updated to the latest upstream release 2.72.

GNU Autoconf is an extensible package of m4 macros that produce shell
scripts to automatically configure software source code packages. These
scripts can adapt the packages to many kinds of UNIX-like systems
without manual user intervention.  Autoconf creates a configuration
script for a package from a template file that lists the operating
system features that the package can use, in the form of m4 macro calls.

Multiple versions of Autoconf can be installed at the same time --
the autoconf wrapper choses among them.

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