with the struct (bin) library available:
function hextobin(str) return bin.pack("H", str) end
function bintohex(str) return bin.unpack("H", str) end
Also removed a commented copy that was in the sniffer-detect.nse script.
license" to "Same as Nmap--See http://nmap.org/book/man-legal.html" like
scripts commonly use. I added the field to some modules I know to be under the
Nmap license: bin, datafiles, dns, nmap, unpwdb. I left alone bin, bit, pcre,
and url, which come from outside sources.
