2008-02-12 Peter Kovacs Bug fixes in the ReferenceMap concept.
2008-02-05 Peter Kovacs Several fixes and improvements in list_graph.h.
2008-02-05 Peter Kovacs Fix doxygen warnings.
2008-02-05 Peter Kovacs Minor improvement in groups.dox.
2008-02-08 Akos Ladanyi Fix VPATH builds. Ported form svn trunk -r 3454.
2008-02-07 Alpar Juttner Merge
2008-02-07 Alpar Juttner Some usefull math constants