tweaked ascii chars
tweaking geometry data structures in preparation for buffer scheduling
fix mesh elements buffer wrong size calculation
make size fields in Mesh specify elements and not triangles

- before the size/alloc/used fields would mean whole faces (in most
  cases triangles)
- now these specify elements (indices), so instead of saying that the
  mesh consists of x triangles, these now mean x indices (of which three
  might make up a triangle)