Dev/20141208 status metrics

Adds the following:

* The ucfirst() function which takes a string and converts the first character to upper case and the rest to lower case.
* The view metrics which is a union of:
     - information_schema.GLOBAL_STATUS
     - information_schema.INNODB_METRICS
     - NOW()
     - UNIX_TIMESTAMP()
  The view uses the ucfirst() function to have all the global status variables and the InnoDB metrics names using the same convention as for the old SHOW GLOBAL STATUS.
  An Enabled column is included to make it easy to filter so just the enabled metrics are included.