[jdk11u] RFR: 8276141: XPathFactory set/getProperty method

[Goetz Lindenmaier]

I backport this for parity with 11.0.15-oracle.

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Commit messages:
 - Backport 4b2f75b0b0441e1ffb4fb3b4f789f13008c20307

Changes: https://git.openjdk.java.net/jdk11u/pull/28/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u&pr=28&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276141
  Stats: 58 lines in 2 files changed: 56 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u/pull/28.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u pull/28/head:pull/28

PR: https://git.openjdk.java.net/jdk11u/pull/28