RFR: 8282280: Update Xerces to Version 2.12.2 [v2]

[Joe Wang]

> Update to Xerces 2.12.2.
> 
> The update also fixes JDK-8144117. Added a test.
> 
> Tests: local XML tests passed. Tier2 passed. Two JCK tests failed with this update. See related issue report.

Joe Wang has updated the pull request incrementally with one additional commit since the last revision:

  provider description

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8732/files
  - new: https://git.openjdk.java.net/jdk/pull/8732/files/ae224c6d..db91b60e

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8732&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8732&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8732.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8732/head:pull/8732

PR: https://git.openjdk.java.net/jdk/pull/8732