[Mingw-w64-public] winpthreads: add support for _USE_32BIT_TIME_T and _TIME_BITS macros

Hi, There have been discussions about adding support for _FILE_BITS and _TIME_BITS macros in mingw-w64 header files. Some of functions provided by winpthreads library use `struct timespec` which depends on `time_t`, however winpthreads does not handle _USE_32BIT_TIME_t and _TIME_BITS macros.

Re: [Mingw-w64-public] [PATCH 2/3] crt: Move __guard_dispatch_icall_dummy to separated file

On 12.04.2025 12:45, Jacek Caban wrote: -// When CFGuard is not active, directly tail-call the target address, which -// is passed via %rax. I realized I dropped this comment, I'll add it to the .S file. I'll hold off on resending for now to see if there are any other comments or opinions.