DVB: Fix accidentally removed line in
594935d8d533cb30d7cfcc7d186dee50a54c4af1 "Split PM_CAPTURE mode into
PM_ANALOG_CAPTURE and PM_DIGITAL_CAPTURE"

This might case DVB mode to lock in certain cases.

Fixes #4178
coverity.bat: Prefer 7-Zip for packages.
SubPic queue: Clear queue only when it's needed.

Time can decrease even within the same video frame and
it make no sense to purge whole queue, if we still can reuse buffered
subpic.
Fix outline size when using default style for ASS subtitles.
RTS: Add some rounding to ensure higher precision.
RTS: Remove work-around which make things only worse.
RTS: Don't remove subtitles effect when default style is applied.

"Default Style" option is to apply default style for subtitles and not
actually completely break them.

Fixes #4171