Fix for Ticket #568 - RPR

See merge request !1051

JVET-P0325: reorder the spatial merge candidates

See merge request !1057

JVET-O0549: Encoder-only temporal filter

See merge request !981

Fix for Ticket #562 - RPR

See merge request !1049

Fix for Ticket #569 - RPR

See merge request !1052

Fix for Ticket #571 - RPR

See merge request !1053

Merge branch 'JVET-O0549_ENCODER_ONLY_FILTER' of https://vcgit.hhi.fraunhofer.de/rickard/VVCSoftware_VTM into JVET-O0549_ENCODER_ONLY_FILTER

  - Fix multiplication overflow in scaled MV position.

  - Disable clipping of unscaled RPR motion vectors.

  - Disable sub-PU grouping optimization with RPR.

  - Incorrect calculation of refHeight.

Changing variable names to not start with capital letter. Also replaced leading s_ with m_ for private, static member variables.

JVET-P0081: Apply asymmetric long tap deblocking (1 + 3) filter at Horizontal Chroma CTB boundaries

See merge request jvet/VVCSoftware_VTM!1018

JVET-P0254: Fix number of luma mapping segments to 32 regardless of bit depth

See merge request !1016

I have confirmed that this modification can be consistent with the specification and there is no problem with the coding results.

Changing variable names to not start with capital letter. Also replaced leading s_ with m_ for private, static member variables.

JVET-P0578: minimum CU size constraint

See merge request jvet/VVCSoftware_VTM!1032

min CU size shall be in the range of min(64, CTU size)

JVET-P0505: Modified non-linear ALF clipping value derivations

See merge request jvet/VVCSoftware_VTM!1033

Fix ticket #574 on different results between sequential and parallel encoding

See merge request jvet/VVCSoftware_VTM!1000

Fixes for the tickets #422 and #577

See merge request jvet/VVCSoftware_VTM!1007

JVET-P0088 and JVET-P0353: modified RPR filters

See merge request jvet/VVCSoftware_VTM!1020