RFR: JDK-8289948: Improve test coverage for XPath functions: Node Set Functions [v3]

[Bill Huang]

> Provided coverage for XPath node set functions. Functions include:
> - id()
> - last()
> - position()
> - count()
> - local-name()
> - namespace-uri()
> - name()

Bill Huang 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:

  Fixed validation error by renaming attributes to be starting with non-digit charaters.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/9633/files
  - new: https://git.openjdk.org/jdk/pull/9633/files/5fe3e92f..2029ce13

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9633&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9633&range=01-02

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9633.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9633/head:pull/9633

PR: https://git.openjdk.org/jdk/pull/9633