Move folder to jdt.core.manipulations; Replace plugin-specific references

[robstryker]

What it does

This patch moves a significant number of refactor classes into jdt manipulations. Twelve previous PRs have been building to this patch, moving dependency classes and small bits of logic around to prepare for this.

By having the refactor operations available in jdt manipulations, they will be availalable to non-UI consumers such as vscode-java / jdt.ls.

How to test

Author checklist

• I have thoroughly tested my changes
• The change is following the coding conventions
• I have signed the Eclipse Contributor Agreement (ECA)

[jjohnstn]

/rebase

[jjohnstn]

Hi @robstryker There was another change to ExtractTempRefactoring just merged. You'll need to handle the conflicts above. I fixed the build problem so it should build.

[robstryker]

@mickaelistria changed the o.e.resources api to use generics and this has broken the build via 9 warnings about generic typesafety. I will need to fix that first.

[jjohnstn]

Looks good.

[iloveeclipse]

FYI: this caused SDK build failure, see eclipse-platform/eclipse.platform#716.

[tjwatson]

This PR caused us to have split packages for the following:

org.eclipse.jdt.internal.corext.refactoring.reorg
org.eclipse.jdt.internal.corext.refactoring

The following classes remain in org.eclipse.jdt.ui

org/eclipse/jdt/internal/corext/refactoring/reorg/ReorgUtils.class
org/eclipse/jdt/internal/corext/refactoring/reorg/JavaElementTransfer.class
org/eclipse/jdt/internal/corext/refactoring/RefactoringAvailabilityTester.class
org/eclipse/jdt/internal/corext/refactoring/RefactoringExecutionStarter.class

I assume these classes could not move to org.eclipse.jdt.core.manipulation for good reason? If so then we need to put some additional meta-data on the exports of these packages from org.eclipse.jdt.core.manipulation similar to how the org.eclipse.core.runtime split package is exported from org.eclipse.equinox.registry:

https://github.com/eclipse-equinox/equinox/blob/7eb1b42156e06225670c1c61cf351f805d5bbd13/bundles/org.eclipse.equinox.registry/META-INF/MANIFEST.MF#L11

Something like:

Export-Package: org.eclipse.jdt.internal.corext.refactoring; jdt.core=split;mandatory:=jdt.core,
 org.eclipse.jdt.internal.corext.refactoring.reorg; jdt.core=split;mandatory:=jdt.core,