#1223 partially fixed (Use of conditionally enabled components):
Fixed issues with conditional components in:
- Modelica.Mechanics.MultiBody.Joints.FreeMotionScalarInit
- All components using this model

Furthermore, more test models added for FreeMotionScalarInit in ModelicaTest 


git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@6895 7ce873d0-865f-4ce7-a662-4bb36ea78beb