Fatal error is thrown when more drivers are registered
When multiple drivers are loaded due to extension manager processes the ext_localconf.php's are loaded twice. This leads to exception #1314979451. Instead of checking only the short name of a driver the DriveRegistry should check the class name as well.
[BUGFIX] Fatal error is thrown when more drivers are registered
Due to some extension manager processes when installing a new extension
the DriveRegistry has to support to register the same short name with the
same class name multiple times.