More GPContext changes:
* libgphoto2/gphoto2-context.[c,h]: Add message functionality
* camlibs: Use it.
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@3886 67ed7778-7388-44ab-90cf-0a291f65f57c
More GPContext changes:
* libgphoto2/gphoto2-context.[c,h]: Add message functionality
* camlibs: Use it.
git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@3886 67ed7778-7388-44ab-90cf-0a291f65f57c