Include all possible problematic rules in the problem description.
When rpmdeplint finds problem, it currently only prints the top-level
problem. This in the most cases does not provide enough details to
successfully debug the situation.
In this commit, the rpmdeplint prints all the problematic RPM rules
leading to a problem, providing much more details.
Signed-off-by: Jan Kaluza <jkaluza@redhat.com>