Added dukpp03::GetValue for implementing getting value from script.
Added dukpp03::GetValue for implementing getting value from script.

mamontov-cpp/dukpp-03,mamontov-cpp/dukpp-03,mamontov-cpp/dukpp-03,mamontov-cpp/dukpp-03,mamontov-cpp/dukpp-03,mamontov-cpp/dukpp-03,mamontov-cpp/dukpp-03