RFR: 8299825: Move StdoutLog and StderrLog to LogConfiguration [v2]

[Johan Sjölen]

> Hi,
> 
> Please consider this small cleanup. `LogConfiguration` initializes and handles the lifetime of `StdoutLog` and `StderrLog`, therefore they should logically belong to that class. I leave the visibility as public for the time being, to change it to private would require the gtests to all be part of a fixture.

Johan Sjölen has updated the pull request incrementally with two additional commits since the last revision:

 - Remove from header
 - Fixes

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14376/files
  - new: https://git.openjdk.org/jdk/pull/14376/files/5e9dc445..9eed2faf

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14376&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14376&range=00-01

  Stats: 13 lines in 2 files changed: 0 ins; 3 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/14376.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14376/head:pull/14376

PR: https://git.openjdk.org/jdk/pull/14376