attributes are now set first, then modes. This is keep consistent with
the setting of glColorMaterial and glEnable(GL_COLOR_MATERIAL) as specfied
in OpenGL documentation.
these global attributes are created by cloning any attributes which are
applied during rendering, the clone in a shallow copy, which will set up
default valus for that attribute. This should prevent attribute bleed
from one stateset to the next when the global StateSet doesn't contain
an attribute used within the scene graph.
