[jdk13u-dev] RFR: 8191278: MappedByteBuffer bulk access memory failures are not handled gracefully

[Sergey Nazarkin]

I'd like to backport this changes to fix crash happens on memory mapped file operations. The patch applies cleanly after https://github.com/openjdk/jdk13u-dev/pull/238.

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Commit messages:
 - Backport aedbb7580334cb9131f547845f9b7aa3916ddf4b
 - Backport 5d87a21991b964e1c50495dc2dc982db425830b5

Changes: https://git.openjdk.java.net/jdk13u-dev/pull/239/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk13u-dev&pr=239&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8191278
  Stats: 2251 lines in 27 files changed: 991 ins; 396 del; 864 mod
  Patch: https://git.openjdk.java.net/jdk13u-dev/pull/239.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk13u-dev pull/239/head:pull/239

PR: https://git.openjdk.java.net/jdk13u-dev/pull/239