RFR: 8303682: Simplify HttpClient DebugLogger

Tue Mar 7 10:25:45 UTC 2023

The HttpClient internal DebugLogger could be simplified if its configuration was held in a record. Some of the methods in Utils that return a debug logger could also be simplified/removed. The system property that configures the debug logging could be extended to choose between System.err, System.out, System.Logger, or any of these configurations.
Passing -Djdk.internal.httpclient.debug=true still works as before.

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Commit messages:
 - 8303682

Changes: https://git.openjdk.org/jdk/pull/12900/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12900&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303682
  Stats: 703 lines in 10 files changed: 476 ins; 122 del; 105 mod
  Patch: https://git.openjdk.org/jdk/pull/12900.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12900/head:pull/12900

PR: https://git.openjdk.org/jdk/pull/12900