hg: kulla/dev/langtools: In advance of returning keys for erroneous input, create ErroneousKind, Variety.Unknown, and the corresponing infrastructure.

[robert.field at oracle.com]

Changeset: 1e084333cd4b
Author:    rfield
Date:      2015-05-05 23:11 -0700
URL:       http://hg.openjdk.java.net/kulla/dev/langtools/rev/1e084333cd4b

In advance of returning keys for erroneous input, create ErroneousKind, Variety.Unknown, and the corresponing infrastructure.

! src/jdk.jshell/share/classes/jdk/internal/jshell/impl/JShellStateImpl.java
! src/jdk.jshell/share/classes/jdk/internal/jshell/impl/SnippetImpl.java
! src/jdk.jshell/share/classes/jdk/jshell/Key.java
! src/jdk.jshell/share/classes/jdk/jshell/Variety.java