RFR: 8286200: SequenceInputStream::read(b, off, 0) returns -1 at EOF [v3]

[Brian Burkhalter]

> Modify the specification of `SequenceInputStream.read(byte[],int,int)` to indicate that `-1` is returned at the EOF of the last stream even if `len` is zero.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8286200: Change @throws NPE clause of read(byte[],int,int) to better match specification verbiage

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8664/files
  - new: https://git.openjdk.java.net/jdk/pull/8664/files/7582dbff..111ea3e2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8664&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8664&range=01-02

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8664.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8664/head:pull/8664

PR: https://git.openjdk.java.net/jdk/pull/8664