[MJAVADOC-729] Link to Javadoc references from JDK 17

[kwin]

Remove mentions when something has been added to ancient JDK 1.4 or 5

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[michael-o]

Does the Java 17 document when a javadoc(1) config option has been introduced? I mean when reading the docs for 17, applying but Java 8, 11 fails?

[kwin]

Does the Java 17 document when a javadoc(1) config option has been introduced?

No, but IMHO no new option has been introduced since Java 6 (maybe apart from -release with Java 9) and for sure no option has been removed. Apart from that the plugin parameters description mentions when something has been added with a more recent release.

I think pointing to the most recent LTS is reasonable, as Oracle worked quite a bit on the documentation.

[michael-o]

Nice cleanup!