Convert the easy ISO-8859 text to UTF-8. The difficult ISO-8859 text will will be eliminated by future commits.
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@5969 67ed7778-7388-44ab-90cf-0a291f65f57c
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@1526 67ed7778-7388-44ab-90cf-0a291f65f57c