RFR: 8075: Improve Eclipse development experience [v2]

[Alex Macdonald]

On Tue, 30 May 2023 08:49:23 GMT, Christoph Langer <clanger at openjdk.org> wrote:

>> This PR merely updates the .classpath files to the state they would end up in when you do `Maven -> Update project ...` in current Eclipse.
>> 
>> There were only 2 manual changes:
>> 1. I updated/corrected application/org.openjdk.jmc.flightrecorder.dependencyview/build.properties
>> 2. I removed application/org.openjdk.jmc.browser.attach/.settings/org.eclipse.jdt.core.prefs because it gets generated upon Eclipse import anyway. Unfortunately it does not serve the use as a workaround for deselecting the `--release` compiler option.
>> 
>> In addition to that, I polished the devguide a little bit to hopefully make it more clear and stringent.
>
> Christoph Langer has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix typo

Marked as reviewed by aptmac (Reviewer).

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PR Review: https://git.openjdk.org/jmc/pull/489#pullrequestreview-1450861948