Exposure IOP: disable 'autoexp' when switching to mode 'automatic'
lua : fix char array types being handled like char* causing crashes

fix bug #9975
Remove some superfluous safeguards

free(NULL) is perfectly fine.
Updated Dutch translation
Merge pull request #583 from MRIG/master

Updated Dutch translation
Do not rotate data upon loading. We will rotate it later in flip IOP
Refactor bitwise orientation into enum dt_image_orientation_t
IOP Flip: take care of flipping