[PATCH] D60464: [pstl] Setup the _PSTL_VERSION macro like _LIBCPP_VERSION, and add release notes

[Louis Dionne via Phabricator via llvm-commits]

ldionne added a comment.

It's implicit in C++. I mean we can decide to do it like the rest of libc++, but we don't have to. For libc++, the reasoning is that it's needed to test in a freestanding environment.

@rodgert @MikeDvorskiy Do you guys want to consistently use `return 0;` at the end of `main`? If so, I'll fix this (and any other test that doesn't do it).


Repository:
  rL LLVM

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  https://reviews.llvm.org/D60464/new/

https://reviews.llvm.org/D60464