test/dfs_test.cc
2008-07-21 Reworking graph testing
2008-07-13 Apply unify-sources.sh to the source tree
2008-06-15 Improve and redesign test programs + unify their output (ticket #25)
2008-02-07 Bfs/Dfs/Dijkstra and their deps ported from svn trung -r 3441.