- done rewriting second order algo

- small optimizations here and there to speed up the vertex array creation
  (we should get rid of List_Add & co)

second order

reduce dependencies by putting the selection buffer stuff in its own file

small cleanups + start rewriting 2nd order stuff

start removal of unused stuff

new option to reverse all the normals (for display). Man, the new code rocks :-)

- SVG export
- more work on new geo database