Fulfilling a very old feature request: a new Mesh Primitives module is
introduced, which gives script writers access to the Blender mesh datablocks
created from the "Add->Mesh" menu. You can now do this:
from Blender import *
me = Mesh.Primitives.UVsphere(10,20,3) # 10 segments, 20 rings, diameter 3
ob = Object.New('Mesh','mySphere')
ob.link(me)
sc = Scene.GetCurrent()
sc.link(ob)
