RFR: 8261455: Automatically generate the CDS archive if necessary [v6]

[Yumin Qi]

> Please review,
>   When shared archive (dynamic archive) failed to map due to damage of the archive file, dump/run jdk version mismatch or non-existence file etc, the new patch will automatically create a new shared archive if -XX:+AutoCreateSharedArchive specified with the name based on SharedArchiveFile.
>   This is a revised patch based on the old PR: 5077 and after bug 8273152 integrated.
> 
> Tests: tier1,tier2,tier3,tier4
> 
> Thanks
> Yumin

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

  Added two tests of using archive which contains only dynamic magic number as content

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5997/files
  - new: https://git.openjdk.java.net/jdk/pull/5997/files/a4aeb6dc..723c755c

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5997&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5997&range=04-05

  Stats: 54 lines in 2 files changed: 54 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5997.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5997/head:pull/5997

PR: https://git.openjdk.java.net/jdk/pull/5997