RFR: 8276640: Use blessed modifier order in jfr code

[Magnus Ihse Bursie]

I ran bin/blessed-modifier-order.sh on source owned by the JFR team. This scripts verifies that modifiers are in the "blessed" order, and fixes it otherwise. I have manually checked the changes made by the script to make sure they are sound.

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Commit messages:
 - 8276640: Use blessed modifier order in jfr code

Changes: https://git.openjdk.java.net/jdk/pull/6254/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6254&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276640
  Stats: 7 lines in 5 files changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6254.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6254/head:pull/6254

PR: https://git.openjdk.java.net/jdk/pull/6254