Hi Harald,

This patch includes the following changes:

- define structure nfnlhdr in libnfnetlink.h
- nfnl_parse_attr now zeroes the array of nfattr. memset is always call 
before the parsing so it's better if we include it inside the macro.
- fix a problem with the attributes types. We have to use NFA_TYPE 
instead of reading from nfa->nfa_type now that your patch to see the 
highest bit of nfa_type has been pushed forward.
- Implement __be_to_cpu64. I haven't found any implementation available 
at the moment.

Please apply.

cheers,
Pablo