With msg level ERROR the message is printed to stderr

Bugfix for bugs 1 and 3 described in Y0190.
With adoption of Y0237 option C, legal bitstreams now and in the future cannot set gci_num_additional_bits to values in the range 1 to 5.
Decoder behaviour if it encounters such values is non-normative.

JVET-Y0155: Fixes and clean up for temporal prefilter

See merge request jvet/VVCSoftware_VTM!2150

Fix #1512: locSumAbs derivation

See merge request jvet/VVCSoftware_VTM!2121

- restore TemporalFilter parameter
- print warning when parameters are outside set that has been
  extensively tested

Remove macros of VTM 15 cycle

See merge request jvet/VVCSoftware_VTM!2153

Fix #1525: don't access sps pointer after potential deletion

See merge request jvet/VVCSoftware_VTM!2143

Rename MTS related variables, fix parameters checking and documentation

See merge request !2148

Fix compile issue with clang 11 compiler

See merge request !2147

JVET-X0073: Decrease profile_idc for 16 bit profiles by 1

See merge request jvet/VVCSoftware_VTM!2140

JVET-X0048-X0103: implementation of film grain analysis and synthesis

See merge request jvet/VVCSoftware_VTM!2132

Add check of reference frame structure to detect low delay configuration

See merge request jvet/VVCSoftware_VTM!2139

JVET-X0143: VTM Encoder Changes for ALF usage with Subpicture

See merge request jvet/VVCSoftware_VTM!2136

JVET-X0101: added WrapAround constraint to Constrained RASL Encoding SEI message

See merge request jvet/VVCSoftware_VTM!2135