Merge functionality from HM (macro JCTVC_Y0038_PARAMS). Add an additional
configuration file parameter that allows re-sending parameter sets at every
random access point.

compositeRefEnabled is an encoder only option. It should not be stored in the SPS.
This commit is the last to remove unused parameters from SPSNext. Thus also
all comments related to SPSNext are removed.

- all elements of SPSNext are moved into SPS
- syntax elements of SPS are sorted according to draft (as far as possible)
- comments were added where software and draft diverge

 - CE9.2.1g + RefinedMV only for MC and TMVP + SAD cost

finalize QPA code, introduce sub-CTU QPA for <=HD sequences, encapsulated in macro ENABLE_QPA_SUB_CTU

- sps_sao_enabled_flag
- sps_alf_enabled_flag
- pcm_enabled_flag
- pcm_sample_bit_depth_luma_minus1
- pcm_sample_bit_depth_chroma_minus1
- log2_min_pcm_luma_coding_block_size_minus3
- log2_diff_max_min_pcm_luma_coding_block_size
- pcm_loop_filter_disabled_flag
- sps_ref_wraparound_enabled_flag
- sps_ref_wraparound_offset
- sps_temporal_mvp_enabled_flag
- sps_sbtmvp_enabled_flag
- sps_bdof_enabled_flag

- remove alternative code path for HM_EMT_NSST_AS_IN_JEM
- remove code in DMVR_JVET_LOW_LATENCY_K0217 (was not defined)