Oldroot will be used as the pattern; It is 'c:\top'
    newdir was: 'c:\top\dir\file'
    Can't find pattern 'c:\top' in dir string 'c:\top\dir\file' at pm_790602_03.pl line 13.
    newdir now: 'c:\top\dir\file'

    Escaped pattern is 'c\:\\top'
    newdir was: 'c:\top\dir\file'
    newdir now: 'c:\newtop\dir\file'