tiffset: Add support for LONG8, SLONG8 and IFD8 field types
I noticed when trying to add a SUBIFDS
tag to a TIFF image that it wasn't working correctly for a BigTIFF:
tiffset -d 0 -s 330 4 $a $b $c $d "$image"
where a
-d
are the offsets. The offsets were garbled.
This change adds support for the field types, and makes this work.