hg: jdk/sandbox: 8216404: Elements.getPackageOf should handle modules

[chris.hegarty at oracle.com]

Changeset: e81edc1f6f7e
Author:    darcy
Date:      2019-01-10 10:34 -0800
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/e81edc1f6f7e

8216404: Elements.getPackageOf should handle modules
Reviewed-by: jlahoda

! src/java.compiler/share/classes/javax/lang/model/util/Elements.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/model/JavacElements.java
! test/langtools/tools/javac/processing/model/util/elements/TestGetPackageOf.java