SubPic: Update SubPicAP to support SubRenderIntf.h version 1.0.8.

Adds the new Clear() method which allows the renderer to invalidate the queue.
SubPicQueue: Use intsafe.h instead of hardcoded values.
version.h: Base nightly status on revision number.
FGManager: Apply the RDPDShowRedirectionFilter exception to audio
VSFilter: Apply default style changes on runtime. No need to reload anymore.

Don't set subtitle again when manipulating style.
STS: Cosmetics
Sync code of the subtitle editor between VSFilter and MPC-HC
Fix typo leading to disable frame stepping in DVD mode.

Fixes #4299
Frame stepping optimizations and cosmetics.

- Backward frame stepping should be faster now.
- Add ability to seek through DVD in paused state
ISR: Apply aspect ratio compenstation.
Cosmetic: Change methods name to indicate that they are subtitles related.
CSubPicQueueNoThread: Respect invalidation time.
Do not clear surface cache when max texture size has not been changed.

We were removing valid surfaces from the cache for PGS/DVB subtitles.
Basically surface cache was broken.
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.