Fixed circular dependency in libraries.

gui_and_draw depends on vsp_graphic and vice versa. Need to manually set the GUI_AND_DRAW_INCLUDE_DIR location before the vsp_graphic subdirectory is added.
Fix GUI formatting around Custom Material button
Fixed include to be case correct for linux.
Fixed bug where merge meshes where not tagged properly in CompGeom.

When the meshes were merge the triangle tags were not being copied.
Update Code-Eli to fix body of revolution problem that hid Pod.