Rotate vertical/portrait photos based on Exif information

[szpak]

When used with own photo gallery some photos can have portrait orientation (what usually doesn't look good when treated as landscape photo). It would be useful to detect it (via Exif information), rotate and use that temporarily created picture instead.

[szpak]

It is an issue with Gnome 3 itself: https://bugzilla.gnome.org/show_bug.cgi?id=516177

randwall should not need to do that transformations on it own. Closing.