Fix show existing frame

- Disable mode info update in case where current frame is coded
  as "show existing frame".
- Should fix issue 676.

Change-Id: Ibee681850eb307f982da6528d3e31cb94f881c08
Merge "Fix show existing frame"
ARM NEON version of denoiser.

Change-Id: I951abd4ad0078f78949f3cb79453ac334fb82a7e
Merge "ARM NEON version of denoiser."