JVET-O0376: add sps_joint_cbcr_enabled_flag

See merge request jvet/VVCSoftware_VTM!764

Refine SIMD implementation of JVET-O0304 (Reduction of number of multiplications in BDOF)

See merge request jvet/VVCSoftware_VTM!797

Fix for Ticket #373 DMVR SAD Doubled

See merge request jvet/VVCSoftware_VTM!767

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

Fix #417: fix regular_merge_flag parsing condition

See merge request jvet/VVCSoftware_VTM!794

# Conflicts:
#   cfg/encoder_lowdelay_P_vtm.cfg
#   cfg/encoder_lowdelay_vtm.cfg
#   cfg/encoder_randomaccess_vtm.cfg

JVET-O0304: Reduction of number of multiplications in BDOF

See merge request !713

# Conflicts:
#   source/Lib/CommonLib/TypeDef.h
#   source/Lib/CommonLib/x86/BufferX86.h

JVET-O0455: Separate maximum number of IBC merge candidates from regular merge mode

See merge request !776

# Conflicts:
#   source/Lib/CommonLib/TypeDef.h

JVET-O0650 signal chroma qp mapping table

See merge request !772

Bugfix #403:wPSNR hex values not printed out per frame

See merge request !763

Indentation improvements

Intra prediction code cleanup

See merge request !792

Remove superfluous clipping

See merge request !791