Reverses order of vertices that weld op gives to make ngon so that it doesn't
reverse the normal from what it used to be.
Fixed a bunch of inconsistent normals in primitives: circle (made normal(s)
point up instead of down), uvsphere, icosphere, cylinder, and cone.
Reviewed at http://codereview.appspot.com/4959056/.
Cone and Cylinder still don't shade properly with ngon end caps, but that is now a different issue from normals.
Fixed some bugs with mesh primitive add
operators. Suzanne now faces forward,
instead of down. Cylinder and circle
both now work. Cone lets you adjust the
diameter at both ends now.
I also reorganized the walker code, to
be more maintainable and understandable.
I've removed editmesh altogether (other then scanfill, which is
seperate code that happens to reuse the editmesh structures).
The compatibility layer I had written for old editmesh tools
was more trouble then it was worth, though it did help in the
early stages of this project.
There's a fair amount of breakage, and there's bunches of tools
(mostly minor ones) I need to port over still. Biggest ones are
join triangles and loop to region, and spin/screw.
This probably isn't really testable, I'll hopefully have more
work done on this soon, but might not be before next week.
