hg: jdk/sandbox: Merge

[daniel.fuchs at oracle.com]

Changeset: 268154b594f5
Author:    dfuchs
Date:      2020-02-04 19:20 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/268154b594f5

Merge

! src/java.base/share/classes/java/net/DatagramSocket.java
! src/java.base/share/classes/java/net/NetDatagramSocket.java
+ test/jdk/java/net/DatagramSocketImpl/TestCreate.java