hg: jdk/sandbox: 8216565: Specifying the same path creates a new directory in JFR.configure

[chris.hegarty at oracle.com]

Changeset: 046533575954
Author:    cito
Date:      2019-01-26 15:47 +0900
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/046533575954

8216565: Specifying the same path creates a new directory in JFR.configure
Reviewed-by: ysuenaga, egahlin

! src/jdk.jfr/share/classes/jdk/jfr/internal/Repository.java
! src/jdk.jfr/share/classes/jdk/jfr/internal/SecuritySupport.java
! test/jdk/jdk/jfr/jcmd/TestJcmdConfigure.java