* libgphoto2/abilities.c:
* include/gphoto2-abilities.h: Let gp_abilities_new return an error
code. This was the last one.
* camlibs/*: Adjust to above change.
* camlibs/canon/canon.c: #if 0 some code to kill some warnings
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@2068 67ed7778-7388-44ab-90cf-0a291f65f57c