Merge changes from topic "clang-format"

* changes:
  clang-format v5.0.0 vp9/
  remove spurious comments
  clang-format v5.0.0 vp8/
  clang-format v5.0.0 vpx_dsp/
  clang-format v5.0.0 mem_ops.h
  clang-format v5.0.0 vpx_util/vpx_atomic.h
  clang-format v5.0.0 y4minput.c
  clang-format v5.0.0 vpxenc.c
  clang-format v5.0.0 examples/
  clang-format v5.0.0 test/

diff --cc vp8/common/blockd.h
Simple merge

diff --cc vp8/encoder/onyx_if.c
Simple merge

diff --cc vp8/vp8_cx_iface.c
Simple merge

diff --cc vp9/encoder/vp9_firstpass.c
Simple merge