Update of leptonica to latest master
Update of leptonica to latest master

peirick/VS2015_Tesseract,peirick/leptonica,peirick/VS2015_Tesseract,peirick/leptonica,peirick/VS2015_Tesseract,peirick/VS2015_Tesseract,peirick/leptonica,peirick/VS2015_Tesseract,peirick/VS2015_Tesseract,peirick/leptonica