[Requirements] Allow requirements to refer to signal requirements
And import the given interface to make use of it.
(from redmine: issue id 2718, created on 2016-10-14, closed on 2016-10-27)
- Relations:
- relates #2717 (closed)
And import the given interface to make use of it.
(from redmine: issue id 2718, created on 2016-10-14, closed on 2016-10-27)