Merge branch 'sws_32bit_integration'

Merge branch 'sws_32bit_integration'

* sws_32bit_integration:
  regtests/sws: update checksums for recent changes
  sws: dont mess with XInc when the code needing it isnt used
  sws: Fix chroma init for 32bit buffers.
  swscale: error dithering for 16/9/10-bit to 8-bit.
  swscale: fix overflow in 16-bit vertical scaling.
  swscale: fix crash in 8-bpc bilinear output without alpha.
  swscale: fix 16-bit scaling when output is 8-bits.
  sws: fix non native endian 9-15 bit input with 16bit out
  sws: disable scale16 when int32 is used
  sws: fix rgb -> 16bit
  sws: fix uv overwrite in 32bt
  sws: fix gray16_1
  sws:ix yuv2rgb48_1_c_template()
  sws: fix 16/32 bug from merge
  swscale: for >8bit scaling, read in native bit-depth.
  swscale: fix another yuv range conversion overflow in 16bit scaling. (cherry picked from commit 81cc7d0bd1eab0aa782ff8dd49e087025a42cdee)
  swscale: fix yuv range correction when using 16-bit scaling. (cherry picked from commit e0b8fff6c7a293e35079ba1931bd19372686b3f6)
  swscale: implement >8bit scaling support.

Merged-by: Michael Niedermayer <michaelni@gmx.at>