* add support in GNAThub for --target and --RTS command line
switches.
* add support for Target and Runtime attributes defined in the project
file.
* add tests to cover the new API methods (Project.target &
Project.runtime).
Change-Id: I42a88471598fefec16a7505ad70cd24b08f3dd8b
TN: O909-050
Provide a default implementation to the GNAThub.Plugin.name property:
return type(self).__name__
Use plugin().name along with plugin.__name__ to discriminate plugins
from their name in the plugin-runner.py.
Change-Id: Ie478427ffd78c45cdab8dd1e842b3736020cd710
TN: N623-022
