RFR: 8289508: Improve test coverage for XPath Axes: ancestor, ancestor-or-self, preceding, and preceding-sibling [v2]

[Rahul Prabhu]

> Created two files for testing XPath Axes: XPathAncestors.java tests the ancestor and ancestor-or-self axes, while XPathPrecedingTest.java tests the preceding and preceding-sibling axes.

Rahul Prabhu has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  8289508: added more tests/superficial changes (2.2,3.3,5.7)

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10211/files
  - new: https://git.openjdk.org/jdk/pull/10211/files/326185a3..72537e12

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10211&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10211&range=00-01

  Stats: 43 lines in 2 files changed: 13 ins; 0 del; 30 mod
  Patch: https://git.openjdk.org/jdk/pull/10211.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10211/head:pull/10211

PR: https://git.openjdk.org/jdk/pull/10211