RFR 8050819: Please add java.util.Stream.ofNullable(T object)

[Paul Sandoz]

Hi,

http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8050819-Stream-ofNullable/webrev/

Stream.ofNullable can make it easier to work fluently when streams are 
produced, for example within flatMap.

A CCC will be filed.

Thanks,
Paul.