update of package to current version (e.g., 4.2.2)

[Dietmar Winkler]

The current shipped version is unfortunately badly out of date. 4.1.6 is from 2011 and has no Python 3 compatibility. The current version is 4.2.2 and supports Python 3.6 (and 2.7).

[Philippe GOETZ (philippe-goetz)]

I packaged:
- omniORB-4.2.2 - https://github.com/philippe-goetz/omniORB
- omniORBpy-4.2.2 including Python3 - https://github.com/philippe-goetz/omniORBpy
for debian stretch

[Hans Joachim Desserud (hjd)]

Thanks for reporting.

omniorb-dfsg 4.2.2 is available in Ubuntu 18.04 and later releases.