6.2.0.4

Version 6.2.0.4

- Initial pre-release for RHEL 8.
Please be aware that this version is not compatible with previous
versions of VDO. Support for loading or upgrading devices created with
VDO version 6.1 will be available soon.
- Management tools will work with both python 2 and python 3.
- Dedupe path improvements.
- Beginnings of support for non-x86 architectures.
- Removed obsolete code from UDS.