hg: jdk9/sandbox/jdk: 8168923: Use unsigned random long in a temp directory name

[chris.hegarty at oracle.com]

Changeset: 0fa4b5647f3e
Author:    igerasim
Date:      2016-11-02 18:45 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/0fa4b5647f3e

8168923: Use unsigned random long in a temp directory name
Reviewed-by: bpb, alanb

! src/java.base/share/classes/java/io/File.java
! src/java.base/share/classes/java/nio/file/TempFileHelper.java