RFR: 7324: Update eclipse version and Min JDK required in Update Site landing pages

Thu Jul 15 18:03:13 UTC 2021

On Thu, 15 Jul 2021 15:03:07 GMT, Guru Hb <ghb at openjdk.org> wrote:

> With Eclipse 4.19 JMC can't be used with Boot JDK 8. Currently the Update sites landing page and README.txt had instruction on how JMC can be used with JDK8 (Which is not valid any more). 
> 
> Updated instruction to use JMC with JDK 11 and above.

Marked as reviewed by hirt (Lead).

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PR: https://git.openjdk.java.net/jmc/pull/278