Make toggle-unlink.html test Mac specific behaviour
https://bugs.webkit.org/show_bug.cgi?id=111321

Reviewed by Ryosuke Niwa.

A new test for Windows behavior will have to be added once bug
110487 is landed.

* editing/execCommand/script-tests/toggle-unlink-mac.js: Renamed
from
LayoutTests/editing/execCommand/script-tests/toggle-unlink.js.
Also set editing behaviour to Mac.
* editing/execCommand/toggle-unlink-mac-expected.txt: Renamed from
LayoutTests/editing/execCommand/toggle-unlink-expected.txt.
* editing/execCommand/toggle-unlink-mac.html: Renamed from
LayoutTests/editing/execCommand/toggle-unlink.html.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144883 268f45cc-cd09-0410-ab3c-d52691b4dbfc