Implementation class operations not callable from reused concern if same class exists

[Matthias Schoettle]

Given the following example, the operations of the same implementation class in the reused concern can not be called:

1. Reused concern woven model contains impl class org.example.A with operations foo and bar
2. current model (the reusing one) contains org.example.A
3. current model contains association to A
4. when calling A, no operations are selectable

When collecting the callable classifiers, implementation classes of reuses whose name matches one in the current model should be considered as well.

[Matthias Schoettle]

Resolves #340: Considers "duplicate" implementation classes (one in the current aspect and another one in an extended or reused aspect) for classifiers.

→ <<cset ab076a28e6b8>>