java.util.stream

[Remi Forax]

The package stream contains two different views,
the user view with Stream/BaseStream, Streamable and Streams and the 
providers view
with the other classes. StreamOpFlags is in the middle and should be 
separated in two parts,
the int flags (IS_ and NOT_) are the user view and the enum values are 
the spi part.

I think the user view shouble be moved in java.util (or another package) 
and the spi view shouble stay in java.stream.

cheers,
Rémi