- update to 2.1.49:
* Improve error message when NetworkPortal restore fails
* Python 3.x porting fixes
* targetctl: A missing restore file is not an error
* Add a message if no configfile is found
* Add StorageObjectFactory
* Convert all exceptions in set_parameter/attribute to RTSLibError
* Change set_parameters/attributes to take an err_func
* Fix missing err_func parameter to set_attributes
* '!' allowed character in block and partition names
* Don't add to cache if cfs create fails
* Don't lower-case return values from _parse_info functions