hg: jdk9/sandbox/jdk: 8072495: (fs) Path.relativize() gives incorrect result for empty path on Windows

[chris.hegarty at oracle.com]

Changeset: c037e5f7386a
Author:    bpb
Date:      2015-02-06 08:05 -0800
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/c037e5f7386a

8072495: (fs) Path.relativize() gives incorrect result for empty path on Windows
Summary: Correct handling of empty path in Windows version of relativize()
Reviewed-by: alanb, dfuchs

! src/java.base/windows/classes/sun/nio/fs/WindowsPath.java
! test/java/nio/file/Path/PathOps.java