Bug#849568: aufs-dkms: dkms install fails

[Gabriel Mainberger]

The DKMS module did not compile for me, when the patch 
0003-enable-CONFIG_AUFS_EXPORT.patch has been enabled.

But it worked well, after I commented out the  $(error hier) line.
config.mk
54c54
< $(error hier)
---
> #$(error hier)