JVET-Q0517: Affine down-sampling filters for RPR

See merge request !1252

Feature/subpic

See merge request !1236

Fix for JVET-Q0487: RPR scaling window issues

See merge request !1254

   - Fix encoder segmentation fault when checking IBC reference.

JVET-Q0495: Cleanup of nonlinear ALF clipping table

See merge request jvet/VVCSoftware_VTM!1248

- Macro: JVET_Q0293_REMOVAL_PDPC_CHROMA_NX2

JVET-Q0249: Cleanup of chroma clipping flags for ALF

See merge request jvet/VVCSoftware_VTM!1240

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

JVET-Q0150: Fix for ALF virtual horizontal CTU boundary processing

See merge request jvet/VVCSoftware_VTM!1244

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

AHG14: QP derivation fix for usability

See merge request jvet/VVCSoftware_VTM!1245

move qp derivation into config, use base QP instead, result in SPS QP is controlled by encoder not by user

JVET-Q0054: Fix long luma deblocking decision

See merge request jvet/VVCSoftware_VTM!1243

Software manual updates

See merge request jvet/VVCSoftware_VTM!1242

JVET-Q0480: Eliminate redundant slice height syntax when in raster rectangular slice mode (tile_idx_delta_present_flag == 0).

JVET-Q0433: Modified chroma distortion weight

See merge request jvet/VVCSoftware_VTM!1235

Fix NumRefIdxActive[] derivation for the unused list of slice I and slice P when num_ref_entries[][] <= 1

See merge request jvet/VVCSoftware_VTM!1227

avoid heap-use-after-free error: use pcv pointer from pps

See merge request jvet/VVCSoftware_VTM!1232