hg: kulla/dev/langtools: variables(), methods(), and classes() should only return active keys. And should be documented accordingly

[robert.field at oracle.com]

Changeset: 51770000bac1
Author:    rfield
Date:      2015-05-08 22:07 -0700
URL:       http://hg.openjdk.java.net/kulla/dev/langtools/rev/51770000bac1

variables(), methods(), and classes() should only return active keys. And should be documented accordingly

! repl/TODO
! src/jdk.jshell/share/classes/jdk/internal/jshell/impl/JShellStateImpl.java
! src/jdk.jshell/share/classes/jdk/internal/jshell/impl/SnippetMaps.java
! src/jdk.jshell/share/classes/jdk/internal/jshell/tool/JShellTool.java
! src/jdk.jshell/share/classes/jdk/jshell/JShellState.java
! test/jdk/jshell/DropTest.java
! test/jdk/jshell/KullaTesting.java
! test/jdk/jshell/ToolBasicTest.java