hg: jdk9/sandbox/langtools: 2 new changesets

[aleksey.shipilev at oracle.com]

Changeset: 52ec875cbcd0
Author:    shade
Date:      2016-01-26 17:23 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/52ec875cbcd0

Merge


Changeset: 5c027d8244e3
Author:    shade
Date:      2016-01-26 17:31 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/5c027d8244e3

Update copyrights to 2016

! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/StringConcat.java
! test/tools/javac/TestIndyStringConcat.java