control for CCD scanners. Added flag for SE 2400 USB, added some quirks in
gt68xx_gt6801.c. Fixed gt68xx_gt6801 -> lamp control. Adjusted Plustek 1248U
geometry and afe values. CCD gross calibration changed: start with the default
value from module struct. Is faster now for most cases. Only 2.5 mm of
calibration for GT-6801 scanners. Added "afe" option for gt68xx.conf for
selecting default afe values. Removed AFE and exposure SANE options. Added
documentation for afe option in gt68xx.conf. New version: 1.0-35.