Migrate model processors from extension point to OSGi DS

[fipro78]

Since 4.20 it is possible to contribute model processors via OSGi DS (see New & Noteworthy)

This way it is possible to get rid of a plugin.xml to contribute the model processors and completely rely on OSGi DS. It also supports the OSGi dynamics.

The model processors in the platform should adapt the OSGi DS approach to get rid of the extension points.

[laeubi]

Please note that currently there is a bug in the modeleditor that makes it sometimes not possible to migrate:

• E4 Editor is not able to discover references from dynamic model contributions eclipse-pde/eclipse.pde#1307

beside that its a great feature I use quite often!