scala/scala — pull request #1247 by jsuereth (2012-09-04 15:07:59+00:00)
Title: Fix t6114 - ++ on JList wrapper modifies underlying collection.

We solve this by overriding clone for JListWrapper to actually do a full clone.

Note: This fix may need to be included other places, *but* we're not sure we've cloned the collection sensibly. I.e. is ArrayList a good default?

Reveiw by @alex22 or @paulp