Sweep up

• Fix bug in cttf with opened_tables_definitions
• Number formatting works better with 3 spaces, prints ## marks now when it just cannot fit (issues #11 and #9)
• Time intervals for mysqladmin files now only print seconds (not hhmmss as before) (issue #5)
• Overhaul of the SHOW parsing to make it possible to fix issue #4
• Intervals not allowed less than 1s, odd intervals now get a warning about being rounded to the nearest second (issue #7)
• Fixed issue with mysqlargs options not liking spaces (issue #10)
• Should more elegantly handle mysqladmin terminating in the middle of a line now (issue #6)