[jdk15u-dev] RFR: 8249867: XML declaration is not followed by a newline

[Yuri Nesterenko]

The changes in original are all in copyright/comments, so this backport may be considered clean. We should wait for CSR approval, however.

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Commit messages:
 - Backport 69ee314b63a9f260e3dcbe9ccd67ddc4faec3ba0

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/178/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=178&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8249867
  Stats: 478 lines in 5 files changed: 428 ins; 2 del; 48 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/178.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/178/head:pull/178

PR: https://git.openjdk.java.net/jdk15u-dev/pull/178