Update to Wine 5.9. This includes the following changes:

• Major progress on the WineD3D Vulkan backend.
• Initial support for splitting dlls into PE and Unix parts.
• Support for generating PDB files when building PE dlls.
• Timestamp updates in the Kernel User Shared Data.
• Various bug fixes.

files/patch-dlls-dwrite-opentype.c was a backport from upstream past
the Wine 5.8 snapshot so is included here - remove it.

Keep files/patch-tools-winegcc, which reverts an upstream change in
Wine 5.8 for the time being while we assess the situation.