patial fix for #326: avoid out of bounds access to getBrickIdxBsMap()

See merge request !780

JVET-O0570/JVET-O0211, SMID friendly spatial gradient calculation in BDOF and PROF

See merge request !779

JVET-O0538: Add SPS control for ISP and SBT transform

See merge request !770

JVET-O0634: BDOF applied CU size align with DMVR

See merge request !774

JVET-O0617: Significant flag context reduction of transform coefficients

See merge request !773

Fix for support of configurable maximum transform size in JVET-O0213 (related to JVET-O0545)

See merge request !778

- This fix is aligned with spec text.

JVET-O0070: Prediction refinement with optical flow for affine mode (PROF)

See merge request !771

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

Fix end of file

See merge request !775

JVET-O1170: IBC virtual buffer

See merge request !750

in residual coding of transform coefficients.

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

Define global FRAC_BITS_SCALE constant to replace local ones

See merge request !769

JVET-O0545: Configurable maximum transform size

See merge request !686

2. add handling of JVET_O0108_DIS_DMVR_BDOF_CIIP when PROF is enabled

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

JVET-O1153: intra chroma mode coding simplification

See merge request !766

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

JVET-O0213: Block size restriction of LFNST to maximum transform size

See merge request !765

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

JVET-O0244: weighted prediction in SPS and delta POC for reference pictures

See merge request jvet/VVCSoftware_VTM!761

JVET-O0060 4x4 deblocking

See merge request !751

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