Ticket #1554

Not final patch. TODO:
1) Do the same in few other similar places
2) Deal with "--upscaledOutput" case which uses even more fields from
potentially deleted SPS and PPS

store sub-picture numbers, sizes, and locations with a picture, so that they can be fetched directly from redPic

JVET-O1143: motion and in-loop filter low-level operations adaptation when subpic boundaries are treated as pic boundaries