Update Ordering javadoc to explain the Java 8 situation. Now with branchiness.
Update Ordering javadoc to explain the Java 8 situation. Now with branchiness.

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mosoft521/guava,typetools/guava,DavesMan/guava,Xaerxess/guava,xasx/guava,berndhopp/guava,berndhopp/guava,tli2/guava,tli2/guava,EdwardLee03/guava,google/guava,mosoft521/guava,xasx/guava,mosoft521/guava,google/guava,rgoldberg/guava,Xaerxess/guava,EdwardLee03/guava,DavesMan/guava,typetools/guava,rgoldberg/guava,google/guava