[X2Go-Dev] Bug#883: Can be fixed by reverting winmultiwindow.patch

I determined that this bug can be fixed by reverting Alex's winmultiwindow.patch to VcXsrv, which was a workaround for #594 and has been included in both 1.15.2.x and 1.17.0.0-x of the VcXsrv X2Go/Arctica builds.

I also created a bug report & branch in the GitHub project for VcXsrv (X2Go/Arctica builds): https://github.com/ArcticaProject/vcxsrv/issues/3 https://github.com/ArcticaProject/vcxsrv/commits/bugfix/bug3

I will be releasing X2Go Client for Windows 4.0.4.0-2015.06.22 with the OpenSSL updates. When I do, I will offer an alternate build with VcXsrv with winmultiwindow.patch reverted. This will be a workaround until we make a change to VcXsrv that fixes both #594 and #883

-Mike#2