Beta 6:

- filter panel GUI issues fixed
- arcadia quickstart incorrectly enabled CD mode (b5)
- directory filesystem ERROR_USER_MAPPED_FILE mapped to OBJECT_IN_USE
- directory filesystem: complain about unimplemented error(s) only once
- unminimize changed display size (update to b4 fix)
- window resize was ignored unless both width and height changed (b4)
- OSD had extra gap in right border (b1)
- D3D fullscreen handling update, device loss handling improved, possible ALT-TAB weirdness should be gone now, D3D debug runtime warnings fixed