RFR: 8253356: JavaFX Terminology Refresh

[Kevin Rushforth]

Replace archaic/non-inclusive words in JavaFX with more neutral terms. See [JDK-8253315](https://bugs.openjdk.java.net/browse/JDK-8253315) for background information.

The following changes are made:

1. Rename whitelist/blacklist to allowlist/rejectlist
2. Rename `MasterTimer` to `PrimaryTimer` in animation and toolkit implementation
3. Rename local variable master in a couple places
4. Remove master from comments in a few other places

This PR doesn't remove uses of the word master where there is no connotation of slavery.

Note that it is out of scope of this PR to address similar issues in 3rd-party code, such as WebKit or GStreamer. We will pick up any relevant changes after they are available in the upstream sources.

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Commit messages:
 - 8253356: JavaFX Terminology Refresh (part 2)
 - 8253356: JavaFX Terminology Refresh (part 1)

Changes: https://git.openjdk.java.net/jfx/pull/368/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=368&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253356
  Stats: 657 lines in 61 files changed: 228 ins; 235 del; 194 mod
  Patch: https://git.openjdk.java.net/jfx/pull/368.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/368/head:pull/368

PR: https://git.openjdk.java.net/jfx/pull/368