[Gzz] Coordsystem benchmarks

[Matti Katila]

Hi,

Todays benchmarks about measuring cs creations without showing any vobs 
was not very good test with timeRender().

Something like here:
 
  for count in range(0, self.count):
     cs = vs.coords.affineCoordsys(0,0,0,0 ,1,0,0,1)
     for nested in range(0,self.nested):
         cs = vs.coords.affineCoordsys(cs,0,0,0, 1,0,0,1)

....

and make the measuring with System.currentTimeMillis():

time = System.currentTimeMillis()
for i in range(0,1000):
    vs = w.createVobScene()
    self.scene(vs)
print 'time: ', (System.currentTimeMillis() - time)


Is better than timeRender which doesn't show difference at all or what do 
you, Tuomas, think?

With coords_benchmark demo I saw that creating coordsystems takes linear 
time and affineCoordsys is twice as expensive as translateCS. 


   -Matti