Blank conditions should remain blank, not return NA (NAToBlank function now converts "NA" to "" as well as converting numerical NaN to "")...

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/qfa@442 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
New version of package for OSX

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/qfa@443 edb9625f-4e0d-4859-8d74-9fd3b1da38cb