Fixed all the modules to give a default name if absent.

Also necessary for the documentation system to know the name
of the module.

nselib/match.lua

@@ -1,5 +1,5 @@
 -- See nmaps COPYING for licence
-module(...,  package.seeall)
+module(... or "match",  package.seeall)
 require "pcre"
 
 --various functions for use with nse's nsock:receive_buf - function