Fixed #227:

Added unit="1" units to the scalar gains of all blocks of the Modelica.Blocks library. This allows a tool to deduce units. Added also a test model for this in the ModelicaTest library.

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@3965 7ce873d0-865f-4ce7-a662-4bb36ea78beb

Author: otter