Rework in order to be able to support USB cameras, too.
Rework in order to be able to support USB cameras, too.


git-svn-id: 40dd595c6684d839db675001a64203a1457e7319@1876 67ed7778-7388-44ab-90cf-0a291f65f57c

gphoto/libgphoto2.OLDMIGRATION,gphoto/libgphoto2.OLDMIGRATION,gphoto/libgphoto2.OLDMIGRATION,gphoto/libgphoto2.OLDMIGRATION