hg: jdk/sandbox: 8009632: (fs) FileStore.supportsFileAttributeView does not detect user_xattr enabled on ext4

[chris.hegarty at oracle.com]

Changeset: 09905cd87bb2
Author:    bpb
Date:      2018-04-12 14:03 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/09905cd87bb2

8009632: (fs) FileStore.supportsFileAttributeView does not detect user_xattr enabled on ext4
Reviewed-by: alanb

! src/java.base/linux/classes/sun/nio/fs/LinuxFileStore.java