This makes it possible to download pictures from / upload pictures to
ax203 based picture frames
It consists of 2 parts:
1) an ax203 camlib, ax203 access, image table parsing, and decompress /
compress code.
2) usbscsi port driver, this is a *Linux only* (for now) port driver
for accessing devices which require sending custom scsi commands to
an usb mass storage device (using the /dev/sg# device under Linux).
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@12854 67ed7778-7388-44ab-90cf-0a291f65f57c
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