hg: amber/amber/langtools: Automatic merge with default

[maurizio.cimadamore at oracle.com]

Changeset: 392dc61d0e79
Author:    langtools
Date:      2017-05-05 20:56 +0200
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/392dc61d0e79

Automatic merge with default

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