remove excess manifest attributes

[eric-milles]

I suspect not all of these are still required. This is a draft to explore removing all or some. And for any kept, adding some docs and tests.

• Ant-Version
• Bundle-ClassPath
• Created-By
• DynamicImport-Package
• Eclipse-BuddyPolicy
• Eclipse-ExtensibleAPI
• Extension-Name
• Tool

[eric-milles]

This is also a work-in-progress for dropping Ant-Version and Created-By from the jarjar output, which retains those attributes due to use of the Ant jar task to repackage the jarjar archive.

[paulk-asert]

This is also a work-in-progress for dropping Ant-Version and Created-By from the jarjar output, which retains those attributes due to use of the Ant jar task to repackage the jarjar archive.

Saw this after my previous comment. Yes, if we can really remove Created-By and Ant-Version, that would be great and remove the need for the hard-coded value for Created-By.

[paulk-asert]

I merged in the "pre-work" and minor refactoring. Do you want to rebase this against master? Should reduce to just a few lines.

[eric-milles]

I have rebased, added comments to the Eclipse-ExtensibleAPI line, and moved DynamicImport-Package and Eclipse-BuddyPolicy to main jar only. I should be able to dig up a jira ticket number for those two from the comments you left on GROOVY-11582.

I still think all 3 can go, but the urgency is not that great.

Just a note, I tried Main-Class in the org.apache.groovy-main plugin, but it did not end up at the end of the manifest, where I wanted it to be. That is why I added a project name check to GroovyLibraryExtension.