Docblocks
Refactor ExceptionHandlerInterface

- Rename setErrorLevel() to setErrorReporting()
- Rename getErrorLevel() to getErrorReporting()
Get default session lifetime from session.gc_maxlifetime
Add 'auto_connect' config option to DatabaseAdapterAbstract. If TRUE, database will connect when the adapter is constructed. Default is FALSE.
Refactor system configuration handling

- Add /config/bootstrapper.php file to hold system configuration.
- Remove legacy JFactory::getConfig() method
- Remove legacy ApplicationDispatcherHttp::getCfg() method