VIDEO:
- Make mouse motion activity consistent with SDL relative direction. Add error output when mouse events are discarded due to queue full.
If a client application delivers motion information in a different relative sense, then that application needs to make the adjustments from the SDL standard direction.
- Added SHOW dev VIDEO capability to describe the underlying SDL video capabilities of the current SDL library and host execution environment.
- Force software based rendering under SDL2. Enhanced debug info.
- Added host OS cursor integration support.
- Reorganize libSDL vs libSDL2 version implementation to leverage common logic without replication.
QVSS:
- Coalesced adjacent screen row updates to minimize vid_draw operations
- Report all relative mouse motion in the mouse position register AND mouse motion data.
- Added debugging information for cursor and scan line map updates
- Add option "SET QVSS CAPTURED" to force capture input mode.
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