Retain the frame size as integer multiples of 8
Retain the frame size as integer multiples of 8

Resolve potential issues in loop filter and cdef.

BUG=aomedia:414

Change-Id: I756c2a16bcb1582be60b2bdbedfc44773ed8f4f3

GrokImageCompression/aom,smarter/aom,GrokImageCompression/aom,GrokImageCompression/aom,smarter/aom,smarter/aom,GrokImageCompression/aom,GrokImageCompression/aom,smarter/aom,GrokImageCompression/aom,smarter/aom,smarter/aom