Fix for Y2038 gettimeofday for Win32 builds

[LainOTN2]

PR Summary Fist part of the Y2038 issue on OpenSSH. Second part here: https://github.com/PowerShell/openssh-portable/pull/738 Porting LibreSSL fix (https://github.com/libressl/portable/pull/1078) for gettimeofday on MSVC builds. timeval was taken from winsock2.h that is 32bit signed.

PR Context Besides overriding gettimeofday and timeval on MSVC platforms, we also need to modify the gettimeofday export of the dll with the overriden name openlss_gettimeofday on crypto/CMakeLists.txt.

[LainOTN2]

@microsoft-github-policy-service agree company="Microsoft"

[tgauth]

these changes were merged as part of https://github.com/PowerShell/LibreSSL/pull/34 so I'm going to close this!