RFR: 8261160: Add a deserialization JFR event [v2]

[Chris Hegarty]

> This issue adds a new event to improve diagnostic information of Java deserialization. The event captures the details of deserialization activity from ObjectInputStream. The event details are similar to that of the serial filter, but is agnostic of whether a filter is installed or not. The event also captures the filter status, if there is one.

Chris Hegarty has updated the pull request incrementally with one additional commit since the last revision:

  Review comments

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2479/files
  - new: https://git.openjdk.java.net/jdk/pull/2479/files/ca0bcf44..8ecf63ce

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2479&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2479&range=00-01

  Stats: 124 lines in 5 files changed: 76 ins; 2 del; 46 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2479.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2479/head:pull/2479

PR: https://git.openjdk.java.net/jdk/pull/2479