Possible issue: the previous version saved document.popupNode and
restored it after copying the image, and the new version does not
(because I don't know how). The test seems to pass anyway.
MozReview-Commit-ID: 7g0JCYxI7x8
--HG--
rename : editor/libeditor/tests/test_bug1140617.xul => editor/libeditor/tests/test_bug1140617.html
Aryeh Gregor