8373246: JDK-8351842 broke native debugging on Linux

[RealCLanger]

This change adds back debug symbols by default to non-product builds.

Whether to add debug symbols to the images/bundles created in a build is controlled by the configure switch --with-external-symbols-in-bundles. Possible values are full, which will be the default setting for non-product builds, none which is the default for product builds and a special option public which is only supported on Windows and enables stripped debug files in JDK/JRE images and bundles that are smaller than full debug files but still allow function names to be displayed in, e.g. hs_err files.

If external-symbols-in-bundles are turned on, they propagate into images and bundles through the jmod files.
With that, some code of Bundles.gmk that took care of copying the right set of debug files is now obsolete and can be removed.

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Progress

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• Commit message must refer to an issue

Issue

• JDK-8373246: JDK-8351842 broke native debugging on Linux (Bug - P2)

Reviewers

• Erik Joelsson (@erikj79 - Reviewer)
• Thomas Stuefe (@tstuefe - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/28829/head:pull/28829
$ git checkout pull/28829

Update a local copy of the PR:
$ git checkout pull/28829
$ git pull https://git.openjdk.org/jdk.git pull/28829/head

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$ git pr checkout 28829

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https://git.openjdk.org/jdk/pull/28829.diff

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[openjdk]

@RealCLanger This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8373246: JDK-8351842 broke native debugging on Linux

Reviewed-by: erikj, stuefe

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At the time when this comment was updated there had been 10 new commits pushed to the master branch:

• 78c2d57: 8373668: Add override keyword to *Klass classes
• b1e8c4e: 8372543: Shenandoah: undercalculated the available size when soft max takes effect
• 3f33eaa: 8373649: Convert simple AtomicAccess usage in ConcurrentHashTable to use Atomic
• ... and 7 more: https://git.openjdk.org/jdk/compare/34f241317ecd7473cfb6dcc2e6e5cf3a40299e2c...master

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (d4d75a38)

[erikj79]

Looks good! Thanks for fixing this.

[tstuefe]

Works (confirmed both with debugging, and o.c. the debuginfo files are all there)

Patch looks fine, thank you!