8178077: jshell tool: crash on ctrl-up or ctrl-down
Summary: When looking up a private method, using the ConsoleReader.class, instead of getClass(), which may return a subclass.
Reviewed-by: rfield

8166744: JShell: java.lang.IndexOutOfBoundsException for legal history access
Reviewed-by: rfield, jlahoda

8159031: jjs throws NoSuchFileException if ~/.jjs.history does not exist
Reviewed-by: sundar, mhaupt

8133549: Generalize jshell's EditingHistory
Summary: Adding a generic EditingHistory to jdk.internal.le, for use by both jjs and jshell
Reviewed-by: sundar