Ensure that the JSP support works with newer dependencies

[merks]

eclipse-platform/eclipse.platform.releng.aggregator#1251

[github-actions]

Test Results

     24 files  ±0       24 suites  ±0   12m 26s ⏱️ + 1m 3s
2 150 tests ±0  2 106 ✔️ ±0  44 💤 ±0  0 ❌ ±0 
2 194 runs  ±0  2 150 ✔️ ±0  44 💤 ±0  0 ❌ ±0 

Results for commit 6204eed. ± Comparison against base commit 10c3708.

[merks]

@akurtakov

I'm not sure who else might want to review this? The "continuous-integration/jenkins/pr-head" build passed....

[akurtakov]

What is the reason to restrict jasper version to [9,10) ? It might be good to keep the current version in the range.

[merks]

What is the reason to restrict jasper version to [9,10) ? It might be good to keep the current version in the range.

I did that originally the first time I made the changes, but this time around when I did the changes, I noticed that this initializer class is not in the older bundle:

It is present in the 8.x version:

But I don't see a 7.x version here:

https://repo1.maven.org/maven2/org/mortbay/jasper/apache-jsp/

So I'm not sure when it was first existing...

[merks]

I suppose it's also possible to wrap the initializer call in a try block that catches LinkageError and then leave the range more open. That would make it harder to notice problems...

[akurtakov]

That's good enough explanation. If/when you have the whole story with jsps working please merge this one together with the rest so we get less build issues.

[merks]

These are the outstanding changes. Remove (replace) the references to org.apache.jasper.glassfish here:

I think I need to commit this PR before I do the above removals...

Locally the help system works without org.apache.jasper.glassfish in the installation:

[merks]

I'm going to proceed with all these changes so that tonight's I-Build will contain all the changes...