[mythtv-cmyth] Win32: Build demuxer
[mythtv-cmyth] Win32: Fix demuxer build

Fixes demuxer compile errors and warnings on Windows.
[mythtv-cmyth] Demuxing MPEG-TS: Handling invalid seek from PVR

- Handles invalid request which break seek flow
- Handles PTS discontinuity on program break
- Add extra logs for debug
[mythtv-cmyth] Revert boolean conversion for integer values

pid and continuity_counter are not boolean.