[jdk11u-dev] RFR: 8249195: Change to Xcode 11.3.1 for building on Macos at Oracle

[Christoph Langer]

Backport of JDK-8249195

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Depends on: https://git.openjdk.java.net/jdk11u-dev/pull/557

Commit messages:
 - Backport 097720cce5bc44555507fdb031c6f78134c0cfbf

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/558/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=558&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8249195
  Stats: 41 lines in 2 files changed: 2 ins; 5 del; 34 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/558.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/558/head:pull/558

PR: https://git.openjdk.java.net/jdk11u-dev/pull/558