hg: kulla/dev/langtools: jshell implementation and API for /drop functionality: deleting a declaration/import. Incomplete drop implenetation. Beginnings of a status(Key) implementation which will support drop and declaration failures and indirectly cause the unraveling of ResolutionStatus.

[robert.field at oracle.com]

Changeset: 4434aa3b152d
Author:    rfield
Date:      2015-04-30 11:43 -0700
URL:       http://hg.openjdk.java.net/kulla/dev/langtools/rev/4434aa3b152d

jshell implementation and API for /drop functionality: deleting a declaration/import.  Incomplete drop implenetation.  Beginnings of a status(Key) implementation which will support drop and declaration failures and indirectly cause the unraveling of ResolutionStatus.

! 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