+Added STLPLUS library to Project. -> Allows us to use nTree! (Was a bit bigger then I thought, but well, everyone just needs to pull the things once! )

+Added Freeglut Lib to Project
--Tests regarding the ntree in Intergarion.cpp.
--Commented "Symbol.cpp" on error producing lines. at least Project compiles again. Ruotong please fix this ASAP!!
--Changed ReturnType of modeling() function