hg: jdk/sandbox: unixdomainchannels: allow ServerSocketChannels to bind to null, and reimplement windows PipeImpl with AF_UNIX

[michael.x.mcmahon at oracle.com]

Changeset: 99884d6e9db3
Author:    michaelm
Date:      2019-12-17 13:53 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/99884d6e9db3

unixdomainchannels: allow ServerSocketChannels to bind to null, and reimplement windows PipeImpl with AF_UNIX

! src/java.base/share/classes/java/nio/channels/ServerSocketChannel.java
! src/java.base/share/classes/java/nio/channels/UnixDomainSocketAddress.java
! src/java.base/share/classes/sun/net/util/SocketExceptions.java
! src/java.base/share/classes/sun/nio/ch/Net.java
! src/java.base/share/classes/sun/nio/ch/UnixDomainServerSocketChannelImpl.java
! src/java.base/share/native/libnio/ch/UnixDomainSocketAddress.c
! src/java.base/windows/classes/sun/nio/ch/PipeImpl.java