RFR: 8253497: Core Libs Terminology Refresh [v3]

[Brent Christian]

> This is part of an effort in the JDK to replace archaic/non-inclusive words with more neutral terms (see JDK-8253315 for details).
> 
> Here are the changes covering core libraries code and tests.  Terms were changed as follows:
> 1. grandfathered -> legacy
> 2. blacklist -> filter or reject
> 3. whitelist -> allow or accept
> 4. master -> coordinator
> 5. slave -> worker
> 
> Addressing similar issues in upstream 3rd party code is out of scope of this PR.  Such changes will be picked up from their upstream sources.

Brent Christian has updated the pull request incrementally with three additional commits since the last revision:

 - This is the controller
 - use 'controller' in Assert.java
 - use 'peer' in CloseRegisteredChannel.java

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1771/files
  - new: https://git.openjdk.java.net/jdk/pull/1771/files/29525f05..b8cd8b6d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1771&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1771&range=01-02

  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1771.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1771/head:pull/1771

PR: https://git.openjdk.java.net/jdk/pull/1771