Descriptive Exceptions

[iridin]

When an exception rises during component's process invocation and it is caused by reading a knowledge, that is annotated as Out, the exception should describe this situation (it means there should be some check that recognizes this situation).
On the same note, when a component's process has an parameter that is annotated as Out and the parameter type is not ParamHolder, an exception is raised during the process invocation, but it should describe that this exact situation occurred.