Installing a modern jpegtran binary for Gallery2

1) Go to my gallery data directory with a command line. Then move to the albums directory.
2) Make sure I have the exiv2 utility installed.
2) Find all jpg files and run this exiv2 command script which resets the exif orientation info.
find . -iname '*JPG' -print0 | xargs -0 -n1 sudo exiv2 -v -m ~/exivcmd -k modify
---- exifcmd file ----
set Exif.Image.Orientation 1
set Exif.Thumbnail.Orientation 1
---- exifcmd file ----
3) Use a browser to get to my gallery maintenance page. Something like www.mysite.com/gallery/lib/support/index.php. The password is in your config.php file.
4) Click on Cache Maintenance.
5) Select Cached HTML pages, Albums and Photo Data, and Thumbnails and Resizes.

Voila, all of my pictures show up correctly on my desktop, iPhone and iPad.