Fix to signal bitrate and CPB size in HRD parameters
Fix to make sure the PT SEI is generated for every picture

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

Includes:
- added flag
- minor updates for variable names
- update for trace strings according to JVET-R2001-vA

JVET-R0162 proposal1: change the signaling of wraparound offset to picture width minus wraparound offset

- fixes other style issues as well

   - Fix formatting issue.

2. fix the wrong variables initialization in EncRCGOP::create()

Related to R0090