test/graph_test.cc added.
It discovered several bugs and warnings in 'include/smart_graph.h',
in 'include/skeletons/graph.h' and in 'work/alpar/list_graph.h'.
They have also been fixed.

BINARIES = edmonds #preflow preflow_res_comp preflow_excess_test

INCLUDEDIRS= -I../../include -I.. -I../{klao,marci,jacint,alpar,johanna,akos}

include ../makefile