GiantBuffer: replaced all assert with COM_assert
GiantBuffer: reordered functions
added GEN::PageAlloc

dynamic pool allocator
use GEN::PageAlloc for GiantBuffer

use PageAlloc for buffer segments
GiantBuffer: added patches

update only part of buffer segment using patches
efficient update of cylinder edges
efficient update of rendermesh
improved update of rendernodes
efficient update of rendernodes
update rendermesh: update normals
vertex mode colors

change colors of vertices when in vertex mode,
highlight selected vertices
fixed color bug

returned reference to temp
cleaned up ArcballCamera interface
changed camera

dragging around non-origin center