Stored form data if validation failed on submit, earlier data disappear after wrong data on submit.
Used Drupal function to convert upper case email id's to lower case.
Changed multiple email ids from comma separate to comma separate and per new line.
xautoload loader should come after the core loaders, but before classloader.
Also, add an unregister() method to all loaders.
Only in unit tests need we prepend the class loader, to avoid hitting a malconfigured database with the core loader.