GitLab

Based on openJdk 8u60 source & iam@ stream prototype in
ag/872080

Uncommented all code that was waiting for java.util.stream
to show up

Differences from original sources:
- Removed unsignedDivision usage from LongStream, it's not currently
supported and we don't expect that large workloads on mobile devices.
- Removed java.nio.file references.
- Removed (yet) not implemented stream-related methods from
other packages listed in package-info.java.

Bug: 27692239
Change-Id: Ie24e60e8248367b576ef91046837ccde152de373
(cherry picked from commit d0a2645e)