Database/query2csv, Database/query2json, Database/query2tt2:
if the query contained comments with placeholders they would be
added to the count and would usually cause the script to request
'-dbarg=ARG' values be added. Now the SQL has all comments
stripped to avoid this.
Database/hosts_list.tpl, Database/hosts_showcount.sqlite.sql: examples
of using 'query2tt2'
Database/query2csv, Database/query2json, Database/query2tt2: minor bug
fix relating to '-dbarg=ARG' option
