Partially revert PR 42703 to fix embedding with MSVC #44842
Merged
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Due to the changes introduced in PR #42703 embedding Julia with MSVC fails with the current beta. A compile error is triggered in platform.h, and the definition of
ios_t
is hidden becauseJL_ATTRIBUTE_ALIGN_PTRSIZE
is empty. This PR puts back a bit of the MSVC-related code that was removed to fix those two issues.