Add basic classes for COPASI SED-ML support.
Add basic SEDML support classes and FindLIBSEDML.cmake file, and modify
relevant COPASI classes and CMakeLists.txt files for the SEDML support.
change dependencies.cmake for LIBSEDML
Add FindLIBSEDML.cmake file
add/update basic classes for SEDML support
update the basic classes for SEDML support.
update SEDML support classes
update of SEDML support classes
add/update basic SEDML support classes.
update SEDML support classes.
Update SEDML export support classes
Update SEDML support classes
Update SEDML support classes
Further updates on SEDML support.
Update SEDML support
Merge remote-tracking branch 'origin/sedml-v1'

Conflicts:
	copasi/CopasiDataModel/CCopasiDataModel.cpp
	copasi/UI/DataModelGUI.cpp
	copasi/UI/copasiui3window.cpp
parmeterTable comboDelegate change immediately updates table (and reaction)
fixed bugs and removed population as parameter
Preparation for using the dependency graph to calculate update
sequences for the model.
Minor fixes so that SEDML support compiles.