long.
The offset is relative to the first byte of the TIFF structure, which is
after the "Exif\0" *and* the extra byte after "Exif\0".
Loop over all IFDs.
Sanity check the offset to the first IFD and the offset in each IFD to
the next IFD.
svn path=/trunk/; revision=12424
Also move ncp222.py, x11-fields, process-x11-fields.pl,
make-reg-dotc, and make-reg-dotc.py.
Adjust #include lines in files that include packet-*.h
files.
svn path=/trunk/; revision=11410
