hg: lambda/lambda/jdk: Fix import and add unit tests for two methods in Comparators.

[mike.duigou at oracle.com]

Changeset: 90d16fce304d
Author:    henryjen
Date:      2013-01-31 23:55 -0800
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/90d16fce304d

Fix import and add unit tests for two methods in Comparators.

! src/share/classes/java/util/Comparator.java
! src/share/classes/java/util/Comparators.java
! test/java/util/ComparatorsTest.java