Added a new quick filter (qfilter) to ldap-search.nse that allows the user to specify, on the command line, an attribute and corresponding value to search the LDAP directory for. The use of the asterisk '*' as a wildcard is permitted in the value parameter.
Updated asn1.lua with some minor notes on a hex value that was used.
Used this perl command:
$ # perl -pi -e 's/string\.len\((.*?)\)/#\1/g' *.lua
Also fixed one instance where the above command didn't correctly
translate the intended code (string.len(a .. b .. c)).
