Integrated: 8274293: Build failure on macOS with Xcode 13.0 as vfork is deprecated

[xpbob]

On Fri, 24 Sep 2021 16:18:57 GMT, xpbob <github.com+7837910+xpbob at openjdk.org> wrote:

> remove vfork() on Darwin

This pull request has now been integrated.

Changeset: 252aaa92
Author:    bobpengxie <bobpengxie at tencent.com>
Committer: Jie Fu <jiefu at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/252aaa9249d8979366b37d59487b5b039d923e35
Stats:     10 lines in 2 files changed: 8 ins; 0 del; 2 mod

8274293: Build failure on macOS with Xcode 13.0 as vfork is deprecated

Reviewed-by: alanb, stuefe, rriggs

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PR: https://git.openjdk.java.net/jdk/pull/5686