Add Block.OpenForBackup() method used for creating disk images
See
http://people.freedesktop.org/~david/gdu2-create-disk-image-1.png
http://people.freedesktop.org/~david/gdu2-create-disk-image-2.png
http://people.freedesktop.org/~david/gdu2-create-disk-image-3.png
http://people.freedesktop.org/~david/gdu2-create-disk-image-4.png
http://people.freedesktop.org/~david/gdu2-create-disk-image-5.png
http://people.freedesktop.org/~david/gdu2-create-disk-image-6.png
http://people.freedesktop.org/~david/gdu2-create-disk-image-7.png
Signed-off-by: David Zeuthen <davidz@redhat.com>
projects / platform / upstream / udisks2.git / commit