RFR: 8368468: Split out everything but configure results from spec.gmk [v2]

[Magnus Ihse Bursie]

On Tue, 23 Sep 2025 17:36:55 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix comment and remove dead code
>
> make/common/CommonVars.gmk line 222:
> 
>> 220: 
>> 221: # You run the new javac using the boot jdk with $(BOOT_JDK)/bin/java $(NEW_JAVAC) ...
>> 222: # Use = assignment to be able to override in bootcycle-spec.gmk
> 
> This comment isn't correct anymore.

There were many issues here. First of all, NEW_JAVAC is not used anymore so it is dead code. Secondly, we still need = assignment for bootcycle builds, but only for JAVADOC. But this is not technically done in bootcycle-spec.gmk anymore. 

I removed the dead code and updated the comment, hope you are okay with it.

There's a lot of cleaning work needed for this file. At this point, I just wanted to do a clear a separation as possible.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27452#discussion_r2376081463