[jdk13u-dev] Integrated: 8238380: java.base/unix/native/libjava/childproc.c "multiple definition" link errors with GCC10

[Yuri Nesterenko]

need to backport this fix to 13u, too. Clean barring one copyright digit.

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Commit messages:
 - Backport a59e8a7f6fed2accd1034eebf16545ef78c3ea1b

Changes: https://git.openjdk.org/jdk13u-dev/pull/360/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=360&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8238380
  Stats: 4 lines in 2 files changed: 1 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk13u-dev/pull/360.diff
  Fetch: git fetch https://git.openjdk.org/jdk13u-dev pull/360/head:pull/360

PR: https://git.openjdk.org/jdk13u-dev/pull/360