[Bug 53960] ucrt has different struct layout than msvcrt

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53960

--- Comment #3 from cqwrteur  ---
https://github.com/wine-mirror/wine/blob/master/include/msvcrt/stdio.h

Also

/* file._flag flags */
#define _IOREAD          0x0001
#define _IOWRT           0x0002
#define _IOMYBUF         0x0008
#define _IOEOF           0x0010
#define _IOERR           0x0020
#define _IOSTRG          0x0040
#define _IORW            0x0080

These flags are all different for UCRT. This part must be changed. They are all
super wrong.