Fix ImageLine rowNumber behaviour

[Google Code Exporter]

In 0.70 the rowNumber is automatically incremented in each write. This breaks 
the read/write logic:

      for (int row = 0; row < pngr.imgInfo.rows; row++) {
                ImageLine l1 = pngr.readRow(row);
                ...
                pngw.writeRow(l1);
          }


Besides, that automatic increment makes little sense unless at ImageLine 
creation the row number is set at 0. 

Original issue reported on code.google.com by [e-mail] on 27 Mar 2012 at 2:52

[Google Code Exporter]

Fixed. 

Original comment by [e-mail] on 3 Apr 2012 at 3:16

• Changed state: Fixed

[Google Code Exporter]

Original comment by [e-mail] on 3 Apr 2012 at 3:16

• Changed state: Verified