[Rev 02] RFR: 8208761: Update constant collections to use the new immutable collections

[Nir Lisker]

> Resubmitting from before the transition to this repo. See linked issue for details.

The pull request has been updated with 1 additional commit.

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Added commits:
 - 12178c7f: Renamed `put` to `entry` as per review comment

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/104/files
  - new: https://git.openjdk.java.net/jfx/pull/104/files/8bf73ca1..12178c7f

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/104/webrev.02
 - incr: https://webrevs.openjdk.java.net/jfx/104/webrev.01-02

  Stats: 154 lines in 1 file changed: 0 ins; 0 del; 154 mod
  Patch: https://git.openjdk.java.net/jfx/pull/104.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/104/head:pull/104

PR: https://git.openjdk.java.net/jfx/pull/104