libs refresh

git-svn-id: https://svn.ntop.org/svn/ntop/trunk/PF_RING@8675 a02cd0c1-8e76-42e1-a119-56f9641475e2
more debug info

git-svn-id: https://svn.ntop.org/svn/ntop/trunk/PF_RING@8676 a02cd0c1-8e76-42e1-a119-56f9641475e2
reworked internal ZC data structures, new pfring_get_max_packet_size()

git-svn-id: https://svn.ntop.org/svn/ntop/trunk/PF_RING@8677 a02cd0c1-8e76-42e1-a119-56f9641475e2
zc driver detach safety check, debug

git-svn-id: https://svn.ntop.org/svn/ntop/trunk/PF_RING@8678 a02cd0c1-8e76-42e1-a119-56f9641475e2