RFR: 6996: Properly support converters [v10]

[Marcus Hirt]

> Including simple test to verify that the resulting instrumented methods are ok.

Marcus Hirt has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 12 commits:

 - Resolving merge conflicts
 - Updated readme
 - Formatting
 - Excluding abstract and interface methods
 - Cleanup and adding more test launchers
 - Fixing JMX serialization
 - Updated schema
 - Formatting
 - Fixes, cleanup and more tests
 - Fixing accidental reformat of the copyright notice
 - ... and 2 more: https://git.openjdk.java.net/jmc/compare/7127e403...fafa5605

-------------

Changes: https://git.openjdk.java.net/jmc/pull/168/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=168&range=09
  Stats: 3242 lines in 67 files changed: 1864 ins; 1129 del; 249 mod
  Patch: https://git.openjdk.java.net/jmc/pull/168.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/168/head:pull/168

PR: https://git.openjdk.java.net/jmc/pull/168