- Prevent weighted prediction related processing when IBC or triangle prediction is enabled for the PU.

  - Reduce DMVR SAD cost by 2x to match spec.
  - Adjust BDOF-Disble and Zero-Cost thresholds accordingly.

2. add handling of JVET_O0108_DIS_DMVR_BDOF_CIIP when PROF is enabled

Adopt JVET-O0070 method 4-2.1a

JVET_O0594/O0252/O0506/O0615/O0624: BDOF reference sample padding using nearest integer sample positions

JVET-O0055 integer-distance DMVR cost to disable BDOF and disable BDOF early-termination in all cases

Cache is enabled incorrectly in DMVR processing

- add braces as suggested
- improve indentation of "else" branch
- fix consistently weird line breaks in clipMv function calls

Always using six tap filters for affine blocks no matter whether all CPMVs are the same. Patch provided by minhua.zhou@broadcom.com