FujiDecompressor: 16-bit raw support
FujiDecompressor: 16-bit raw support

Refs. https://github.com/darktable-org/rawspeed/issues/228
Refs. https://github.com/darktable-org/darktable/issues/4323

There's still something about white level reported wrong.

darktable-org/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed