improve multipage tiff processing (jbreiden patch from 2016-03-29)
improve multipage tiff processing (jbreiden patch from 2016-03-29)

amitdo/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,UB-Mannheim/tesseract,jbarlow83/tesseract,jbarlow83/tesseract,amitdo/tesseract,amitdo/tesseract,jbarlow83/tesseract,stweil/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,stweil/tesseract,tesseract-ocr/tesseract,stweil/tesseract,UB-Mannheim/tesseract,UB-Mannheim/tesseract,stweil/tesseract,jbarlow83/tesseract,stweil/tesseract