> Even debian has 1.0.19 in the stable distribution. I think it is
> simpler to just remove the #ifdefs and bump the minimum required
> dependencies.

otherwise I forgot two `#ifdef', one in H/soundio.h:70 and one in
InOut/libsnd.c:800, because SF_FORMAT_VORBIS is defined only from 1.0.18

I'll add the missing code only if your suggestion will be rejected.

The subversion of the stable libsndfile remembers me an age...
... happy birthday to Debian (with 48h-delay)

tito