RFR: JDK-8064681 : Jaxp unit test need to be improved

[Mahendra Chhipa]

https://bugs.openjdk.java.net/browse/JDK-8064681

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Commit messages:
 - JDK-8064681 : Jaxp unit test need to be improved

Changes: https://git.openjdk.java.net/jdk/pull/3115/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3115&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8064681
  Stats: 541 lines in 6 files changed: 125 ins; 268 del; 148 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3115.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3115/head:pull/3115

PR: https://git.openjdk.java.net/jdk/pull/3115