VUI modifications including VUI length, moving two flags from GCI to
VUI, reordering VUI variables to follow syntax elements

Constraint that no subpicture can be outside the conformance cropping
window + rewrite the conformance cropping window when extracting a
subpicture

JVET-S0160 aspect 1 and aspect 9: inference of pps_loop_filter_across_tiles_enabled_flag and constraint on ph_poc_msb_cycle_present_flag

Karsten Suehring authored 4 years ago and Frank Bossen committed 4 years ago

- also disable decoder conformance checks that fail for multi-layer streams apparently without valid reason
- rename Picture::layer to temporalId, because temporal ID is stored in this member variable