Handle some multiline inputs.

If there are multiple lines in an input box, it breaks various things.  Fix that
up by concating them together.  Its a little better.


git-svn-id: https://groke.mcmaster.ca/svn/grad/colin/trunk/TableTool@8555 57e6efec-57d4-0310-aeb1-a6c144bb1a8b