compress: Bug fix in rd2

the sa8d cost in rd2 for inter and intra are different
for inter, totalbits = 0,
for intra, totalbits = cabac bits
for now, making the totalbits = 0 for both inter and intra
encoder: report the hash digest from the correct frame encoder

--HG--
extra : rebase_source : 03d6af702109ce40f26554ce154740a5bdcd0432
encoder: do not generate digest string if we are not going to print it
remove unused HM WeightPredAnalysis files