Update to Wine 5.19.

This includes the following changes from Wine 5.18 which we had to skip
since it failed to build on FreeBSD:

• USER32 library converted to PE.
• Console no longer requires the curses library.
• Support for display modes with various orientations.
• A number of syntax fixes in the WIDL compiler.
• Vulkan shader compilation using the new vkd3d-shader library.
• Non-recursive makefiles.

Plus the following changes from version 5.19 itself:

• Wine Mono engine updated to 5.1.1, with WPF text formatting support.
• KERNEL32 library converted to PE.
• DSS cryptographic provider.
• Windowing support in the new console host.
• A number of exception handling fixes.
• Various bug fixes.

Our local patch files/patch-tools-makedep became obsolete by those
changes that first broke version 5.18 and now appear fixed in 5.19.

files/patch-dlls_kernel32_Makefile.in needs some adjustments due to
changed context, but retains the core tweak we've been carrying.