remove rotate if image is obviously already in portrait (situation can come from...
[booh] / lib / booh /
drwxr-xr-x   ..
-rw-r--r-- 11182 GtkAutoTable.rb
-rw-r--r-- 8608 booh-lib.rb
-rw-r--r-- 8531 html-merges.rb
-rw-r--r-- 604 pre-setup.rb