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

[thomas.stuefe at gmail.com]

Changeset: 1aea2085d990
Author:    qpzhang
Date:      2020-02-04 21:27 +0800
URL:       https://hg.openjdk.java.net/jdk/submit/rev/1aea2085d990

8238380: java.base/unix/native/libjava/childproc.c "multiple definition" link errors with GCC10
Summary: Fixed libjava/childproc.o link errors caused by GCC10 default -fno-common
Reviewed-by: alanb, stuefe

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