Fixed some warnings

proj/SkyXEngine/vs2013/SkyXEngine.sln

proj/sxaigrid/vs2013/sxaigrid.vcxproj

proj/sxanim/vs2013/sxanim.vcxproj

proj/sxlevel/vs2013/sxlevel.vcxproj

proj/sxrender/vs2013/sxrender.vcxproj

proj/sxscore/vs2013/sxscore.vcxproj

source/game/LightDirectional.h

source/game/LightPoint.h

source/render/editor/axes_static.cpp

source/render/editor/grid.cpp

source/render/model_sim.cpp

source/render/render_func.cpp

source/score/sound.cpp