RFR: 8306580: Propagate CDS dumping errors instead of directly exiting the VM [v3]

[Matias Saavedra Silva]

> Currently, when CDS dumping run into an unrecoverable error (e.g., file I/O error, out of memory), it calls MetaspaceShared::unrecoverable_writing_error(), which directly exits the VM.  Some of these errors can be propagated to the caller for a normal exit. 
> 
> This change introduces `MetaspaceShared::writing_error()` to report errors without exiting the VM. The function `MetaspaceShared::unrecoverable_writing_error()` now should only be used for errors that require the VM to exit. Verifier with tier1-5 tests.

Matias Saavedra Silva has updated the pull request incrementally with two additional commits since the last revision:

 - Thomas comments and cleanup
 - Added test for file errors

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/19370/files
  - new: https://git.openjdk.org/jdk/pull/19370/files/7f92425e..4e99c916

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19370&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19370&range=01-02

  Stats: 72 lines in 5 files changed: 64 ins; 2 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/19370.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19370/head:pull/19370

PR: https://git.openjdk.org/jdk/pull/19370