getinkml file copying tools.

file.

primitive and not object relationships).

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

explain how relationships are matched.

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

(which use a list of synonyms)
	modified:   lg.py

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

(left and right of the comparison)
Modify evallg.py to add the option to compute these matrices and build
the HTML file.
	modified:   evallg.py
	modified:   lg.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

led to negative error measures.

Modified lg2txt.py to support mapping arbitrary symbols with certain relationships; updated mathMLMap.csv mapping file.