JVET-AJ0241: Text description SEI purpose for encoder description

See merge request jvet/VVCSoftware_VTM!2789

JVET-AJ0129: Add more SEI types to the list of allowed SEI types in SPO SEI

See merge request jvet/VVCSoftware_VTM!2791

JVET-AJ0225: Changes to RDO for enhancement layer

See merge request !2778

JVET-AJ0067: AHG10: Suggested updates of settings for scalable VVC coding

See merge request jvet/VVCSoftware_VTM!2785

Take bit depth into account when applying temporal prefilter

See merge request jvet/VVCSoftware_VTM!2788

Addresses performance issue for 12-bit video

Cleanup macros from previous cycle(s)

See merge request jvet/VVCSoftware_VTM!2787

Initialize m_numSubPic for unavailable pictures.

See merge request jvet/VVCSoftware_VTM!2784

A pointer to a current SPS is already stored within Picture.
No need to add a new member `m_numSubPic`

Set m_numSubPic to a value signaled in SPS for the layer.
Otherwise an error is triggered when an unavailable picture
happens to be in the reference list for GDR picture partitioned into
more than 1 sub-pictures.

Error message is: "TMVP cannot be enabled in pictures
that have no reference pictures with the same resolution"

Define default value for Picture::m_numSubPic

See merge request jvet/VVCSoftware_VTM!2781

Fixes issues with certain GDR conformance bitstreams

Fix #1648 on sps_chroma_horizontal/vertical_collocated_flag usage in case of multilayer

See merge request jvet/VVCSoftware_VTM!2771

# Conflicts:
#   source/Lib/CommonLib/InterPrediction.cpp

Fix a regression in RPL parsing in Multilayer case

See merge request jvet/VVCSoftware_VTM!2749

Fix #1649 on rprConstraintsActiveFlag

See merge request jvet/VVCSoftware_VTM!2772

Fix #1645 on sbtmvp enabling condition in CU-level in case of multilayer profile.

See merge request jvet/VVCSoftware_VTM!2768