hg: jdk/sandbox: 8178109: More useful documentation on /help

[chris.hegarty at oracle.com]

Changeset: b7ae1437111b
Author:    jlahoda
Date:      2017-11-23 19:44 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/b7ae1437111b

8178109: More useful documentation on /help
Summary: For /help <command/subject>, show the help for the command/subject directly.
Reviewed-by: rfield

! src/jdk.jshell/share/classes/jdk/internal/jshell/tool/JShellTool.java
! src/jdk.jshell/share/classes/jdk/internal/jshell/tool/resources/l10n.properties
! test/langtools/jdk/jshell/ToolTabCommandTest.java