Fixing Barcoddler to run on Processing 2.0.

Basically, I tried to be clever with the old video API's way of
enumerating devices. That bit me in the butt. Now, as a stopgap
measure before I completely rewrite the camera selector, I make no
excuses about writing a function called
justPickACameraWithRightFormatAndPrayItsBloodyLogitechPro();.