VMROSD: Show chapter marks on OSD seekbar.
VMROSD: Invalidate the OSD when the position is updated while the seekbar is visible.

This makes sure the user can actually see the cursor moving while playing.
VMROSD: Increase seekbar cursor accuracy.
Update VirtualDub to v1.10.4-test11.
Run astyle.
Shave off a few more bytes from png files.
MediaInfo: Enable image formats.
Update coverity.bat.

Redirect stdout to stderr and both to NUL for the tar check.
Update Unrar to 5.0.8.