RFR: 8257733: Move module-specific data from make to respective module [v2]

[Mandy Chung]

On Tue, 8 Dec 2020 18:16:15 GMT, Mandy Chung <mchung at openjdk.org> wrote:

>> @wangweij Moving build tools is a related, but separate, question, which is addressed by https://bugs.openjdk.java.net/browse/JDK-8241463.
>> 
>> I send out a review earlier this year (see https://mail.openjdk.java.net/pipermail/build-dev/2020-March/027038.html), but there were differing opinions on what the proper placement of these tools should be, and the discussion kind of fizzled out without reaching a conclusion.
>
> @magicus @erikj79 it's now clearly stated that you want everything under `make` owned by the build team, which is fair.  You are right that `make` has been easily considered as a dumping ground and it's time to define a clean structure.
> 
> I reviewed this patch and this looks okay to me.   Some follow-up questions and follow-on cleanup for example "should jdwp.spec belong to `specs` directory vs `data`?  There are platform-specific data (such as charsets) which has been special-case in the makefile and they need follow-on clean up.   I agree that this should be cleaned up by the component teams and not part of this PR.

With these new files showing up in under `src` directory, should `bin/idea.sh` be changed to exclude `data` to avoid incurring costs in loading JDK project from IDE that many of us use for development?

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PR: https://git.openjdk.java.net/jdk/pull/1611