[jdk11u-dev] RFR: 8223291: Whitespace is added to CDATA tags when using OutputKeys.INDENT to format XML

[Tyler Steele]

See comments in https://github.com/openjdk/jdk11u-dev/pull/1530.

This backport requires a review. It is not marked clean because it does not change the `@LastModified` dates in several places. In all cases, these dates were newer in the current version of jdk11u-dev. In a similar vein, this change adds to a newer list of bug ids in one place.

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Depends on: https://git.openjdk.org/jdk11u-dev/pull/1531

Commit messages:
 - 8223291: Whitespace is added to CDATA tags when using OutputKeys.INDENT to format XML

Changes: https://git.openjdk.org/jdk11u-dev/pull/1532/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1532&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8223291
  Stats: 94 lines in 8 files changed: 65 ins; 7 del; 22 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1532.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1532/head:pull/1532

PR: https://git.openjdk.org/jdk11u-dev/pull/1532