hg: jdk9/sandbox/langtools: 2 new changesets

[chris.hegarty at oracle.com]

Changeset: 6d343a9dcfea
Author:    jjg
Date:      2017-01-20 18:23 -0800
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/6d343a9dcfea

8173141: tools/javac/classreader/FileSystemClosedTest.java fails on Windows
Reviewed-by: ksrini

! test/tools/javac/classreader/FileSystemClosedTest.java

Changeset: 50c877258ca9
Author:    jjg
Date:      2017-01-20 18:24 -0800
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/50c877258ca9

Merge