<i18n dev> RFR: 8287187: Utilize HashMap.newHashMap() in CLDRConverter [v2]

[Naoto Sato]

> Refactoring the leftover self-calculations of the optimized `HashMap` initial value with `newHashMap()` method. Also replaced some string literals using text blocks for better readability. Confirmed that the output resource bundle sources are effectively (sans indentation) the same as the original ones.

Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:

  minor fixup

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8887/files
  - new: https://git.openjdk.java.net/jdk/pull/8887/files/faab3ea1..c2cc3391

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8887&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8887&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8887.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8887/head:pull/8887

PR: https://git.openjdk.java.net/jdk/pull/8887