Fix indent in source_var_based_partition_search_method

Change-Id: I6e5e0571d6967b9b992966336715e35bb97f187e
acm_random: provide full range for Rand8()

the gtest implementation used only returns values between 0 and 2^31-1

+ temporarily disable some tests in lpf_8_test which misbehave with the
  new range

Change-Id: I8a026680c4b8c12dc14d4f24c33edb2315963114
Increase delta-qp for aq=3 mode, after key frame.

For a few refresh periods after key frame, use large qp-delta
to increase quality ramp-up.

Change-Id: Ib5a150fb2dfa6bafd0d4e6b5d28dfd0724b61319
Use memset for initialization to 0

Change-Id: I714ca22b5d51016bf8b035cf457616c707257641
Merge "Fix indent in source_var_based_partition_search_method"
Merge "Increase delta-qp for aq=3 mode, after key frame."
Merge "Use memset for initialization to 0"
Merge "acm_random: provide full range for Rand8()"