configure.in vs. configure.ac (Re: RFA: Add Epiphany newlib & libgloss port)

[Joern Rennecke]

Quoting Jim Meyering <jim@meyering.net>:

> Using the "configure.in" name rather than "configure.ac" is really
> anachronistic.  Better to switch to the latter (it's been 10 years),
> if only to avoid making people wonder which version of autoconf you require.
> It will probably avoid some warnings, too, for those who enable them.

All the autoconf template files in newlib and libgloss are named  
configure.in .
If I add a port with confiure.ac, it'll be the odd one out.