Refactor the code to keep only one afdo_propagate_edge function.
tree53e61cc87963432854a3d069c75de311999cb9d9
drwxr-xr-x - gcc-4_6-mobile-vtable-security
drwxr-xr-x - gcc-4_6-mobile
drwxr-xr-x - gcc-4_6
drwxr-xr-x - gcc-4_6_2-mobile
drwxr-xr-x - gcc-4_6_3-mobile
drwxr-xr-x - gcc-4_7-integration
drwxr-xr-x - gcc-4_7-mobile-vtable-verification
drwxr-xr-x - gcc-4_7-mobile
drwxr-xr-x - gcc-4_7
drwxr-xr-x - gcc-4_8
drwxr-xr-x - integration
drwxr-xr-x - main