Java model delta for playedBy bindings

[stephan]

Changing a role's playedBy binding should be reflected in corresponding java model deltas.

The place to add this would be org.eclipse.jdt.internal.core.JavaElementDeltaBuilder#findContentChange, and the change should be classified as IJavaElementDelta.F_SUPER_TYPES.

Unfortunately, the SourceTypeElementInfo does not contain the necessary information about base classes. This would need to be added from CompilationUnitStructureRequestor#enterType. (Check if this would be inconsistent with the use of the OTModelManager in said enterType).

These deltas are needed, e.g., for updating callin markers. See #185

[stephan]

Resolved in r22435 by

• adding a field + accessors to SourceTypeElementInfo
• letting CompilationUnitStructureRequestor pass this additional data (in createTypeInfo not enterType as planned); also in SourceIndexerRequestor#enterClass.
• JavaElementDeltaBuilder finally creates the delta with flag F_SUPER_TYPES

[stephan]

See comment:3:ticket:185 for application of this fix for the callin marker creator.