- added, improved and gtkdoc-abled comments for functions   that are likely to survive restructuring - changed several calls to gp_debug* to GP_DEBUG
- added, improved and gtkdoc-abled comments for functions
  that are likely to survive restructuring
- changed several calls to gp_debug* to GP_DEBUG


git-svn-id: 40dd595c6684d839db675001a64203a1457e7319@2907 67ed7778-7388-44ab-90cf-0a291f65f57c

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