Corrected wrong stop time
Added test for StopTime to conform to the Modelica language specification
modifying attributes of arrays within an extend clause does not work probably, so a work around is done by an external explicit declaration of modifiers
Enumeration types should be used explicitly
Additional simple abstract classes for constructing a working example with OMC
Additional working example with OMC
Explicit usage of enumeration types rather than Integer
(OMC bug) Naming conflicts PhaseSystem.n and NegativePin n
Merge remote-tracking branch 'upstream/openmodelica' into openmodelica