hg: jdk/sandbox: Move ObscureException to its own file. Rewrite BasicDouble.

[stuart.marks at oracle.com]

Changeset: e0530ee8af48
Author:    smarks
Date:      2018-03-29 14:40 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/e0530ee8af48

Move ObscureException to its own file. Rewrite BasicDouble.

! test/jdk/java/util/Optional/Basic.java
! test/jdk/java/util/Optional/BasicDouble.java
! test/jdk/java/util/Optional/BasicInt.java
! test/jdk/java/util/Optional/BasicLong.java
+ test/jdk/java/util/Optional/ObscureException.java