Update license for OSATE

[lwrage]

Unified license text and source header are available.

[jjhugues]

As discussed with Lutz: there is no direct way to apply existing tools for this

• we have multiple languages used here, we need to adapt header box accordingly
• most tools use regexp matching, but we have existing copyright headers with various formats

If we were to do this, we would need first to remove all header boxes through scripting; then configure Eclipse to apply all header boxes.

[lwrage]

Also, some files contain a standard eclipse license header these must stay as they are because they are (maybe modified) copies of 3rd party code.

[jjhugues]

Yes, you are right. These should be considered separately. By "all header boxes", I meant OSATE specific ones

[jjhugues]

This extends to other places

here is an excerpt from the text from About OSATE -> OSATE icon
copyright years is wrong, and list of authors incomplete

"by Feiler, Greenhouse, Wrage, Delange

Version: 2.5.0-SNAPSHOT -- Build id: 2019-05-12

(C) Copyright Carnegie Mellon University, 2005–2015.
"

if you click on plugin details, we have either "Software Engineering Institute" or "CMU/SEI" or "providerName" (for fault tree.design and generation).