Since version 2.1.3 the Tracer class is always generated in the default package

[Jesper Öqvist]

The Tracer class used to be parsed as an aspect. This was changed in 2.1.3 so that it's just written directly to file. That means that it always ends up in the default package.

The Tracer class needs to be generated in the same package as the rest of the AST.

[Jesper Öqvist]

Fixed Tracer code generation problem

• the Tracer class is now generated in the correct package again
• this fixes a regression in version 2.1.3
• added new aspect Output.jrag with utility attributes to calculate target Java file for code generation and to create the package output directory

fixes issue #150 (bitbucket)

→ <<cset 0803aa117aa6>>