hg: jigsaw/jake/langtools: 8144845: produce an error instead of a warning when there are conflicting visible packages.

[jan.lahoda at oracle.com]

Changeset: 66e7f5ddd959
Author:    jlahoda
Date:      2016-01-06 13:19 +0100
URL:       http://hg.openjdk.java.net/jigsaw/jake/langtools/rev/66e7f5ddd959

8144845: produce an error instead of a warning when there are conflicting visible packages.

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Enter.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Modules.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! test/tools/javac/modules/DuplicateClassTest.java
! test/tools/javac/modules/PackageConflictTest.java
! test/tools/javac/modules/PackageMultipleModules.java