[jdk17u-dev] RFR: 8316696: Remove the testing base classes: IntlTest and CollatorTest

[Goetz Lindenmaier]

I backport this for parity with 17.0.15-oracle.

Several enhancements touched the files edited in this change
causing the need to resolve. Among others:
  8283698: Refactor Locale constructors used in src/test
  8287868: Localized names update in COMPAT locale provider
Several tests needed resolving of Copyright.
 
test/jdk/java/text/BreakIterator/BreakIteratorTest.java
  Two of the modified tests not in 17.

test/jdk/java/text/Collator/APITest.java
test/jdk/java/text/Format/DateFormat/DateFormatTest.java
  I had to edit the quite different test output, but changes trivial.

test/jdk/java/text/Format/NumberFormat/Bug4838107.java
  Later change "8317372: Refactor some NumberFormat tests to use JUnit" was already backported
  including some lines of this change.

test/jdk/java/text/Format/NumberFormat/IntlTestDecimalFormatSymbols.java
  19 added enhancement "8282625: Formatter caches Locale/DecimalFormatSymbols poorly"
  I had to edit the quite different test output, but changes trivial.

test/jdk/java/util/Locale/LegacyCodesClassInvariant.java
  This includes a bit of test rework I had to resolve, but the changed
  code is identical to 21. The resolve is needed becuase of context
  differences.

test/jdk/java/util/Locale/LocaleEnhanceTest.java
test/jdk/java/util/Locale/LocaleTest.java
  These needed mostly trivial edits.


test/jdk/java/util/TimeZone/TimeZoneTest.java
  Resolved as "8285844: TimeZone.getTimeZone(ZoneOffset) does not work for all
  ZoneOffsets and returns GMT unexpected" not in 17.

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

Commit messages:
 - Resolved parts
 - Parts that applied clean

Changes: https://git.openjdk.org/jdk17u-dev/pull/3214/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3214&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316696
  Stats: 4463 lines in 79 files changed: 916 ins; 1080 del; 2467 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3214.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3214/head:pull/3214

PR: https://git.openjdk.org/jdk17u-dev/pull/3214