Re-format mode MessageBox messages - so that they can be split into main/sub text for MacOS dialogs.


git-svn-id: http://cantata.googlecode.com/svn/trunk@5357 b1e49159-3266-923f-9c3e-04f16369770a
MessageBox text changes


git-svn-id: http://cantata.googlecode.com/svn/trunk@5358 b1e49159-3266-923f-9c3e-04f16369770a