fixes omission in refactoring for record, inner to outer and pullup.

[homberghp]

This PR closes #7044

The issue describes that record info was lost when doing and inner to outer or pull up refactoring.

In this pull request

• tests to show the issue.
• junit test helper to make test output better understandable: AssertLinesEqualHelpers.java
• added factory for Record classTree in TreeFactory and TreeMaker
• improved methods in CasualDiff and VeryPretty to pick op parameters from record in constructor, so that var args are preserved.

And also: minimal drive-by changes.