Lots of static methods in an interface

[Daniel Latrémolière]

> Yes, we already tried this.  And found (to our chagrin and shock) that 
> there was class in the JDK that implements List and Set, which blows 
> this strategy up.  And that fixing this would be prohibitively 
> difficult, because its also Serializable and therefore we had to worry 
> about serialization compatibility (you can't make this stuff up.)
Sad. Your endorsed-JEP 154 <http://openjdk.java.net/jeps/154> is really 
needed (and to be posted another day of year than first april). :-)

(I will be killed by Oracle on Java compatibility)
Daniel.