hg: kulla/dev/langtools: Adding ability to refer to previous snippets via shorthand commands.

[jan.lahoda at oracle.com]

Changeset: 61606c9d1d35
Author:    jlahoda
Date:      2015-06-11 10:31 +0200
URL:       http://hg.openjdk.java.net/kulla/dev/langtools/rev/61606c9d1d35

Adding ability to refer to previous snippets via shorthand commands.

! src/jdk.jshell/share/classes/jdk/internal/jshell/tool/ConsoleIOContext.java
! src/jdk.jshell/share/classes/jdk/internal/jshell/tool/JShellTool.java
! test/jdk/jshell/ToolBasicTest.java