[PATCH] rename configure.in to configure.ac

[Carlos O'Donell]

On 09/04/2013 08:07 PM, Mike Frysinger wrote:
> Autoconf has been deprecating configure.in for quite a long time.
> Rename all our configure.in and preconfigure.in files to .ac.
> 
> Signed-off-by: Mike Frysinger <vapier@gentoo.org>

OK by me if you also update the wiki page on regeneration of files:
https://sourceware.org/glibc/wiki/Regeneration

I'm assuming you tested with old and new autoconf within the
allowances of our recommended minimum versions and it worked fine.

Cheers,
Carlos.