hg: jdk/jdk: 8198697: Simplify initialization of platform encoding

[roger.riggs at oracle.com]

Changeset: 10f447530d32
Author:    rriggs
Date:      2018-03-02 14:17 -0500
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/10f447530d32

8198697: Simplify initialization of platform encoding
Reviewed-by: redestad, sherman

! src/java.base/share/native/libjava/System.c
! src/java.base/share/native/libjava/jni_util.c
! src/java.base/share/native/libjava/jni_util.h