RFR: 8273492: Move evacuation failure handling into G1YoungCollector [v3]

[Thomas Schatzl]

> Hi all,
> 
>   can I have reviews for this change that moves young gc evacuation failure handling (`G1EvacFailureRegions`) from `G1CollectedHeap` to `G1YoungCollector`.
> 
> Testing: tier1-3
> 
> Thanks,
>   Thomas

Thomas Schatzl has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:

 - Merge branch 'master' into 8273492-move-evac-failure-handling-to-younggc
 - sjohanss review
 - Merge branch 'master' into 8273492-move-evac-failure-handling-to-younggc
 - Move evac failure handling to young gc

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Changes: https://git.openjdk.java.net/jdk/pull/5419/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5419&range=02
  Stats: 154 lines in 13 files changed: 58 ins; 40 del; 56 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5419.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5419/head:pull/5419

PR: https://git.openjdk.java.net/jdk/pull/5419