cmake: Add "${itk2dcm}_dciodvfy" test only if "dciodvfy" executable is found
cmake: Add "${itk2dcm}_dciodvfy" test only if "dciodvfy" executable is found

QIICR/dcmqi,QIICR/dcmqi,QIICR/dcmqi,QIICR/dcmqi,QIICR/dcmqi