make_stats: more intelligence for stats counter
report_stats: a simple script to report power statistics
make_stats: protect against invalid data
make_stats: reset state to 'Off' when starting on new host
Merge branch 'master' of github.com:jason17055/shepherd
powerlog-import: check date format before putting in database
make_stats: show actual host names while processing
report_stats: command-line arguments to control output