[NSE] Added Boolean Operators for --script. You may now use a boolean operator

("and", "or", or "not") combined with categories, filenames, and filenames with
a '*', wildcard, to match many files.  This change requires the script database
to be recompiled. Please see the thread at
http://seclists.org/nmap-dev/2009/q2/0100.html for more information.

nse_main.cc

@@ -335,10 +335,11 @@ int script_updatedb (void)
     "    ' categories field is not a table')\n"
     "  local basename = assert(match(script, '[/\\\\]?([^/\\\\]-%.nse)$'))\n"
     "  table.sort(categories)\n"
+    "  db:write('Entry { filename = \"', basename, '\", categories = {')\n"
     "  for j, category in ipairs(categories) do\n"
-    "    db:write('Entry { category = \"', lower(category),"
-    "      '\", filename = \"', basename, '\" }\\n')\n"
+    "    db:write(' \"', lower(category), '\",')\n"
     "  end\n"
+    "  db:write(' } }\\n')\n"
     "end\n"
     "db:close()\n";
   int status = SCRIPT_ENGINE_SUCCESS;