hg: lambda/lambda/jdk: Additional utils and javadoc

[mike.duigou at oracle.com]

Changeset: 197bf7b0507d
Author:    henryjen
Date:      2012-11-05 14:11 -0800
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/197bf7b0507d

Additional utils and javadoc
Reviwed-by: bgoetz, mduigou

! src/share/classes/java/util/Comparators.java
! test-ng/tests/org/openjdk/tests/java/util/ComparatorsTest.java