Use roundTransPrecInternal2Amvr() instead of
roundIbcPrecInternal2Amvr() since half-pel precision is not
supported by the latter

fix compilation errors by code merging and harmonize with JVET_O0119_BASE_PALETTE_444, JVET_O0502_ISP_CLEANUP, JVET_O0472_LFNST_SIGNALLING_LAST_SCAN_POS, JVET_O0545_MAX_TB_SIGNALLING

fix some JCCR related indentation, encapsulation, and descriptive text, add --PYUV to software manual

This reverts commit 9503ca9c

fix missed syntax change in xCalcPuMeBits

Adopt JVET-O0070 method 4-2.1a

1. moving the cbf signaling from transform_tree() to transform_unit()
2. using transform depth 1 for coding chroma cbfs for CUs with SBT; solving the s/w bug reported in ticket #338

use m_pcEncCfg->getUseAffineAmvrEncOpt() to control the effect of m_pcEncCfg->getIntraPeriod() != ( uint32_t ) -1, i.e., low delay setting.