hg: jdk/jdk: 8199124: (fs) Reduce allocation for file system methods that are invoked with no open options

[brian.burkhalter at oracle.com]

Changeset: 80fe6f64d8a0
Author:    bpb
Date:      2018-06-21 11:10 -0700
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/80fe6f64d8a0

8199124: (fs) Reduce allocation for file system methods that are invoked with no open options
Reviewed-by: alanb
Contributed-by: Michael Skells <mike.skells1 at gmail.com>

! src/java.base/share/classes/java/nio/channels/AsynchronousFileChannel.java
! src/java.base/share/classes/java/nio/channels/FileChannel.java
! src/java.base/share/classes/java/nio/file/Files.java
! src/java.base/share/classes/java/nio/file/spi/FileSystemProvider.java