fix: uninitialized read m_totalFrameThreads

--HG--
branch : stable
rest: reorganize analysis options into their own section
sei: remove SEIPictureTiming fields we do not signal, cleanup

Completely remove constructor and destructor
sei: white-space nits
SEI: fix bus error, cleanup m_decodingUnitInfoSEIEnabled

Remove setHrdPaarameters function as all the necessary HRD parameters are
already computed and set in the initHrd function.
rc: set pbFactor to default with cutree
rc: use actual bits to update vbv buffer
rc: fixes to improve quality in vbv

--HG--
extra : amend_source : d056e7e5ad489cd6e10d16c75be534f8efcaf0e0
Merge with stable
rc: move isCbr initialization to constructor, to avoid init() race
rc: use member isCbr rather than making a shadow variable
rc: nit
rc: further improvements to code clarity
rc: only pass param to rc constructor
nalwrite: simplify write method; single allocation with no reallocs

--HG--
extra : amend_source : 71aa6f5ae8604192894d686b22e630d0a97f49f1