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

	modified:   SmGrConfMatrix.py
	modified:   evallg.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

	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

	modified:   sumMetric.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.

Additions and corrections to symbol and structure maps identified while creating the 2013 RIT-side test data set.

Added lost changes from previous commits; created default mappings for symbols and relationships, updated translation file.

Updated evaluate (keep rather than delete files; don't generate .dot/.pdf by default); symbol counts added to sumDiff.py