RFR: 8310242: Clarify the name parameter to Class::forName [v5]

[Mandy Chung]

> This PR clarifies the spec of the 3-arg Class::forName  regarding the format of the name for an array type which is of the form: one or more of "[" + binary name of the element type + ";'.

Mandy Chung has updated the pull request incrementally with one additional commit since the last revision:

  Review comment.  Add a test

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14528/files
  - new: https://git.openjdk.org/jdk/pull/14528/files/b631c2be..a75542ff

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14528&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14528&range=03-04

  Stats: 92 lines in 2 files changed: 86 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/14528.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14528/head:pull/14528

PR: https://git.openjdk.org/jdk/pull/14528