Wine staging 4.0-rc7 release

[Alistair Leslie-Hughes]

Binary packages for various distributions will be available from:
https://www.winehq.org/download

Summary of the past few weeks
* Rebased to current wine 4.0-rc7 (837 patches are applied to wine vanilla)
* Reviewed and upstreamed patches.

Upstreamed (Either directly from staging or fixed with a similar patch).
* windowscodecs: Fix the buffer size check in the TIFF decoder's
IWICBitmapFrameDecode::CopyPixels implementation.

Added:
* 26653 - oleaut32: Support VT_DECIMAL in VarRound.
* 37639 - vssapi: Add
?CreateVssBackupComponents@@YGJPAPAVIVssBackupComponents@ stub
* 46088 - vssapi: Add CreateVssBackupComponentsInternal stub
* 46465 - msvcp140: Forward _Equivalent to tr2_sys__Equivalent_wchar

Updated:
* Improved support for python2 in staging scripts.

Where can you help
* Run Steam/Battle.net/UPlay.
* Try you favorite game.
* Test your favorite applications.
* Steal staging patches and get them accepted upstream.

As always, if you find a bug, please report it via
https://bugs.winehq.org

Best Regards
 Alistair.