RFR: 8259267: Refactor LoaderLeak shell test as java test. [v5]

[Ivan Šipka]

> Refactor `test/jdk/java/lang/annotation/loaderLeak/LoaderLeak.sh` as java test.

Ivan Šipka has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:

 - 8166026: Refactor java/lang shell tests to java
 - 8166026: Refactor java/lang shell tests to java
 - 8166026: Refactor java/lang shell tests to java
 - 8166026: Refactor java/lang shell tests to java

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Changes: https://git.openjdk.java.net/jdk/pull/1577/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1577&range=04
  Stats: 444 lines in 6 files changed: 139 ins; 305 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1577.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1577/head:pull/1577

PR: https://git.openjdk.java.net/jdk/pull/1577