Blender Git Loki

- update new conversion to DLM routine to use match subsurf
(means optim, seams, selection should work same now, but I am
not super familiar with all this stuff so can't test very well).

These hacks to the DLM structure are disgusting btw Ton. What
a waste of memory! All the information that is so meticulous to
kept and managed in the old structure is essentially explicit (or
easily made so) in the new one.