hg: jigsaw/jake/langtools: Fix test on ProblemList; add missing method impl in file manager

[jonathan.gibbons at oracle.com]

Changeset: c84763b6fe42
Author:    jjg
Date:      2016-02-11 14:58 -0800
URL:       http://hg.openjdk.java.net/jigsaw/jake/langtools/rev/c84763b6fe42

Fix test on ProblemList; add missing method impl in file manager

! src/jdk.compiler/share/classes/com/sun/tools/javac/file/JavacFileManager.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/file/Locations.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/util/ModuleHelper.java
! test/ProblemList.jake.txt
! test/tools/javac/T8003967/DetectMutableStaticFields.java