Fix DXVA status for some decoders after 4a79186.

Checking status only once is not reliable.
Even LAV Video Decoder can disable HW decoding on fly except DXVA Native mode.

Fixes #3881
Show tooltip with H/W decoder name in status bar.

Fixes #3873
Statusbar: fix some visual glitches

Fixes #2870
Merge pull request #124 from kasper93/dxva_status

H/W acceleration status changes.
Update SoundTouch to 1.8.0.
Update VirtualDub to v1.10.5-test2.
Use `void` instead of `VOID`.
Enable `/Qpar` compiler option.

Reference  http://msdn.microsoft.com/en-us/library/hh923900.aspx