Is HAVE_STDINT_H worth while?

[schwehr]

I would argue that compilers that don't have stdint.h are too old to be work supporting on the master branch of libaec. If stdint.h isn't present (or is broken), will libaec even compile?

Using encode_accessors.h as an example:

#include "config.h"

#if HAVE_STDINT_H
#  include <stdint.h>
#endif

Could be come just

#include <stdint.h>

[MathisRosenhauer]

Since C99 is now required this certainly can go.