RFR: 8276095: ciReplay: replay failure due to incomplete ciMethodData information [v2]

[Dean Long]

> The replay data was missing MethodData::_invocation_counter.  Adding it seems to fix the problem.  @rwestrel please verify if it works for you.  Also, with this change:
> 1. added a version number to the replay file
> 2. removed unnused ci fields
> 3. corrected comment in TestLambdas.java

Dean Long has updated the pull request incrementally with three additional commits since the last revision:

 - _current_mileage field is never used, stub out access
 - initialize _version to 0
 - remove comment

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6344/files
  - new: https://git.openjdk.java.net/jdk/pull/6344/files/a7580022..20bea849

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6344&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6344&range=00-01

  Stats: 7 lines in 2 files changed: 1 ins; 5 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6344.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6344/head:pull/6344

PR: https://git.openjdk.java.net/jdk/pull/6344