RFR: 8244778: Archive full module graph in CDS [v4]

[Ioi Lam]

> This is the same patch as
> [8244778-archive-full-module-graph.v03](http://cr.openjdk.java.net/~iklam/jdk16/8244778-archive-full-module-graph.v03/)
> published in
> [hotspot-runtime-dev at openjdk.java.net](https://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2020-August/041496.html).
> The rest of the review will continue on GitHub. I will add new commits to respond to comments to the above e-mail.

Ioi Lam 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 eight additional commits since the last
revision:

 - Merge branch 'master' into 8244778-archive-full-module-graph
 - Feedback from Coleen
 - Removed TODO comment referring to JBS issue
 - Merge branch 'master' into 8244778-archive-full-module-graph
 - fixed trailing spaces
 - Renamed ModuleEntry::write_growable_array
 - Update to latest repo (JDK-8251557); added comments
 - 8244778: Archive full module graph in CDS

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/80/files
  - new: https://git.openjdk.java.net/jdk/pull/80/files/e541890e..a1abed8f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=80&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=80&range=02-03

  Stats: 8945 lines in 269 files changed: 3645 ins; 3698 del; 1602 mod
  Patch: https://git.openjdk.java.net/jdk/pull/80.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/80/head:pull/80

PR: https://git.openjdk.java.net/jdk/pull/80