Legal files. Proposal.
1 edge: edgepathgraph_test.cc edgepathgraph.h
2 g++ -I../.. -I../klao -I../../hugo edgepathgraph_test.cc -o test
4 hier: hierarchygraph.h hierarchygraph_test.cc
5 g++ -I../.. -I../klao -I../../hugo hierarchygraph_test.cc -o test