RFR: 8261455: Automatically generate the CDS archive if necessary [v5]

[Yumin Qi]

> This patch is re-coded after serial fixes related: 8275846, 8276787, 8279018 etc.
> original description(PR 5997):
> `----------------------------------------------------------------------------------`
> 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 with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains six additional commits since the last revision:

 - Set SharedArchiveFile to NULL when using default archive as base
 - Merge branch 'master' into jdk-8261455
 - Make FailMapInfo ctor with full path archive name, removed redundant check for magic number
 - Fixed multiple isssues, added test cases, cleaned code
 - Set ArchiveClassesAtExit when AutoCreateSharedArchive is enabled
 - 8261455: Automatically generate the CDS archive if necessary

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6920/files
  - new: https://git.openjdk.java.net/jdk/pull/6920/files/7a101a35..305ce603

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6920&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6920&range=03-04

  Stats: 11191 lines in 365 files changed: 7705 ins; 2454 del; 1032 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6920.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6920/head:pull/6920

PR: https://git.openjdk.java.net/jdk/pull/6920