OpenJDK 11: Merging in java.io.OutputStream

This is part of merging upstream changes from OpenJDK 11.28. This CL
updates java.io.OutputStream

There is a new API added in java.io.OutputStream:
    method public static java.io.OutputStream nullOutputStream();

This is tested by a newly added test

Test: m droid
Test: atest OutputStreamTest
Test: atest CtsLibcoreTestCases:libcore.java.io.OutputStream.NullOutputStrea
Change-Id: I14ea010499fb51d621ca242d516cbcdb0f2498f1
3 files changed