[Translation] made XliffFileDumper support CDATA sections.
bug #11513 [Translation] made XliffFileDumper support CDATA sections. (hhamon)

This PR was merged into the 2.3 branch.

Discussion
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[Translation] made XliffFileDumper support CDATA sections.

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | maybe
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11256
| License       | MIT

Commits
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9926845 [Translation] made XliffFileDumper support CDATA sections.