RFR : 8013712 : (XS) Add Objects.nonNull and Objects.isNull

[Mandy Chung]

On 4/30/2013 3:45 PM, Mike Duigou wrote:
> Hello all;
>
> Another changeset coming from the lambda libraries effort. This one is two small additions to the Objects class. The introduced methods are not really intended to be used directly, comparison operators work better in imperative logic, but the methods will be very useful as Predicates.
>
> http://cr.openjdk.java.net/~mduigou/JDK-8013712/0/webrev/

This looks fine.  Minor nit: s/null/{@code null} in the javadoc.

It'd be good to add simple test cases to the existing test 
test/java/util/Objects/BasicObjectsTest.java for these 2 methods.

Mandy