2013-01-24  Juan A. Moreno <gelide.prj@gmail.com>
    * src/core/system_manager.cpp, src/core/system.cpp, src/utils/utils.cpp:
    Bug #3600646 has been corrected, thank you Jarred for the patch!!

    * src/ui/dialog_system_edit.cpp
    Bug fixed. Now DatFile and BiosFile are not updated if the user select a
    directory.

    * src/core/dat_reader_factory.cpp
    Bug fixed. Now cheks if the path pased is a directory.