file.

intersection) in lg.py, small formatting change for testlg.py.

connect two nodes with the same associated label set, and that each
node has at most one label in this case.

Add the multi labels metric for the nodes and edges level
(not for segments)
	new file:   Tests/multiLab0
	new file:   Tests/multiLab0a
	new file:   Tests/multiLab1
	new file:   Tests/multiLab1a
	new file:   Tests/multiLab2
	new file:   Tests/multiLab2a
	modified:   lg.py
	modified:   testlg.py

	modified:   SmGrConfMatrix.py
	modified:   evallg.py
	modified:   testlg.py

	modified:   SmGrConfMatrix.py
	new file:   Tests/segment5erra
	new file:   Tests/segment5errb
	new file:   Tests/segment6erra
	new file:   Tests/segment6errb
	modified:   testlg.py

Add the comparison of substructure at primitive and object levels.
Add a test suite to test it.
	new file:   SmGrConfMatrix.py
	modified:   evallg.py
	modified:   lg.py
	new file:   smallGraph.py
	modified:   sumMetric.py
	modified:   testlg.py

	new file:   Tests/segment1sc
	new file:   Tests/segment2sc
	new file:   Tests/segment3sc
	modified:   lg.py
	modified:   testlg.py