remove weird characters that appear on Windows and caused NAs when converting to numeric.  
Thanks to johnhan1987 (https://github.com/johnhan1987) for the report.


git-svn-id: svn://scm.r-forge.r-project.org/svnroot/twsinstrument/pkg/qmao@416 edb9625f-4e0d-4859-8d74-9fd3b1da38cb