don't abort on some cases on exit
[booh] / bin /
drwxr-xr-x   ..
-rwxr-xr-x 4899 album2booh
-rw-r--r-- 222273 booh
-rwxr-xr-x 68357 booh-backend
-rwxr-xr-x 74763 booh-classifier
-rwxr-xr-x 1021 booh-fix-whitebalance
-rwxr-xr-x 1021 booh-gamma-correction
-rwxr-xr-x 4773 webalbum2booh