Bug#857147: [Pkg-phototools-devel] Bug#857147: darktable builds with -msse2 on i386

[David Bremner]

based on the discussion in this bug, and

      
https://github.com/darktable-org/darktable/blob/master/src/views/view.c#L328-L332

I'm currently leaning towards dropping i386 binaries for stretch.