Fix MSVC dists to include new necessary files
|Reported by:||SF/upthorn||Owned by:||fingolfin|
The Scumm.vcproj file in each the MSVC version dists was missing engines\scumm\script_v3.cpp and engines\scumm\script_v4.cpp that are now necessary to the compilation. This patch addresses that.
Ticket imported from: #2776913. Ticket imported from: patches/1117.