TIFF I/O : add support for multiple bands in 'scanline` reading method in `read_any_gray` (partially fixes #3669) (NOTE: we default to `scanline` even for `stripped` images, TODO add support as per #3670)
TIFF I/O : add support for multiple bands in 'scanline` reading method in `read_any_gray` (partially fixes #3669)
(NOTE: we default to `scanline` even for `stripped` images, TODO add support as per #3670)

naturalatlas/mapnik,lightmare/mapnik,mapnik/mapnik,naturalatlas/mapnik,lightmare/mapnik,tomhughes/mapnik,mapnik/mapnik,naturalatlas/mapnik,tomhughes/mapnik,tomhughes/mapnik,tomhughes/mapnik,lightmare/mapnik,mapnik/mapnik,mapnik/mapnik,lightmare/mapnik,naturalatlas/mapnik