Added missing export ndpi_set_proto_defaults in libndpi.sym
Fix for using the libpcap library part of ~/PF_RING if present
Other minor changes


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@8129 a02cd0c1-8e76-42e1-a119-56f9641475e2
Replaced lib with a symbolic link


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@8130 a02cd0c1-8e76-42e1-a119-56f9641475e2
Fixed for adding -lrt and -lnl (if present) when using PF_RING


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@8132 a02cd0c1-8e76-42e1-a119-56f9641475e2