hg: jdk9/sandbox/langtools: 2 new changesets

[aleksey.shipilev at oracle.com]

Changeset: 4227f424cf8a
Author:    shade
Date:      2015-11-17 17:34 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/4227f424cf8a

Turn string concat warning into Assert in javac

! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Gen.java

Changeset: ddcada2c4132
Author:    shade
Date:      2015-11-18 00:28 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/ddcada2c4132

Remove N tags in favor of non-null String C tags

! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Gen.java