Trace more information

[Emma Söderberg]

Collect more info in trace objects. The following has been suggested:

• type on which attribute was declared,
• type on which closest equation was declared,
• type of instance (this is available but not stored separately at the moment).

The above information would make it possible to do cache analysis where the end result would be to replace equations with declarations in order to only cache on a sub type.

This added information would make the trace calls quite long. To reduce the number of parameters, trace information could possibly be added as a list of name-value pairs.