RFR: 8282024: add EscapeAnalysis statistics under PrintOptoStatistics [v9]

[aamarsh]

> Escape Analysis and Scalar Replacement statistics were added when the -XX:+PrintOptoStatistics flag is set. All code is placed in `#ifndef Product` block, so this code is only run when creating a debug build. Using renaissance benchmark I ran a few tests to confirm that numbers were printing correctly. Below is an example run:
> 
> 
> No escape = 317, Arg escape = 118, Global escape = 1995 (EA executed in   11.71 seconds)   ** EA stats might be slightly off since objects might be double counted due to iterative EA **
> Objects scalar replaced = 201, Monitor objects removed = 23, GC barriers removed = 50, Memory barriers removed = 224

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

  removed iterative fix and refactored

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8019/files
  - new: https://git.openjdk.java.net/jdk/pull/8019/files/a2811a8f..0805514a

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8019&range=08
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8019&range=07-08

  Stats: 66 lines in 5 files changed: 13 ins; 28 del; 25 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8019.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8019/head:pull/8019

PR: https://git.openjdk.java.net/jdk/pull/8019