Added composer
Remove adodb - use composer instead
Remove Zend/* - does not seem to be used
Remove swiftmail - use composer instead
**Not yet tested** - upgraded from 4.1.5 to 5.2.1
Remove  http_build_query.php - No need to support < 5.3
Remove  Validate.php - Only being used for email validation.
Now using PHP internal function filter_val for email validation.
Use composer autoloader.
Start removing includes. Not all can be removed at this time due to global variable issues.