hg: jdk/sandbox: 8238380: java.base/unix/native/libjava/childproc.c "multiple definition" link errors with GCC10

[chris.hegarty at oracle.com]

Changeset: 6925fca95959
Author:    qpzhang
Date:      2020-02-04 21:27 +0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/6925fca95959

8238380: java.base/unix/native/libjava/childproc.c "multiple definition" link errors with GCC10
Reviewed-by: stuefe, clanger, rriggs
Contributed-by: patrick at os.amperecomputing.com

! src/java.base/unix/native/libjava/childproc.c
! src/java.base/unix/native/libjava/childproc.h