hg: jdk10/sandbox/langtools: Merge

[ashipile at redhat.com]

Changeset: 9f4a51c73200
Author:    shade
Date:      2017-05-29 10:24 +0200
URL:       http://hg.openjdk.java.net/jdk10/sandbox/langtools/rev/9f4a51c73200

Merge

- test/jdk/jshell/MergedTabShiftTabTest.java
- test/tools/javac/lambda/speculative/T8177933.java
- test/tools/javac/modules/T8158224/T8158224.out