RFR: 8314263: Signed jars triggering Logger finder recursion and StackOverflowError

[Sean Coffey]

Recursive initialization calls possible during loading of LoggerFinder service.  

This fix detects the recursive call and returns a temporary LoggerFinder that is backed by a lazy logger. Automated test case developed to simulate loading of an external LoggerFinder service while also having other threads poke System.getLogger during this framework initialization.

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Commit messages:
 - more cleanup
 - Copyright year
 - Edits to orig patch
 - Initial design

Changes: https://git.openjdk.org/jdk/pull/15404/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15404&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314263
  Stats: 406 lines in 7 files changed: 396 ins; 1 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/15404.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15404/head:pull/15404

PR: https://git.openjdk.org/jdk/pull/15404