Changeset 171:02f4d5d9bfd7 in lemon for test/graph_maps_test.h

Improve and redesign test programs + unify their output (ticket #25)

• Move graph related utilities form test_tools.h to graph_test.h.
• Move the contents of graph_utils_test.h to graph_utils_test.cc.
• Rename map_test.h -> graph_maps_test.h.
• Rename digraph_test.h -> graph_test.h.
• Many improvements in the following files:
  • digraph_test.cc
  • graph_test.cc
  • graph_test.h
  • graph_maps_test.h
  • graph_utils_test.cc
  • bfs_test.cc
  • dfs_test.cc
  • counter_test.cc
• Test programs print messages only if it really seems necessary.
• Remove \file commands form .cc test files.