completely messed it up
got it do use much less renderers but it shoved no time at all from plotting

draw colorbar with 224 colors actually takes .5 seconds! Need to improve that code
ok got the VTK 2D plots to return a dict of reusable things
Adding vtkGrid arg to VTK plot backend
slightyl faster naimations....
removed print statement
Merge remote-tracking branch 'origin/master' into optimize_vtk
ok most test suite runs now
one set of test fails no idea why continents are not drawn on that test
put conts z back to their regular value
correct print stement syntax
got it to use vtkLogRepresentation (thanks @ThomasMaxwell )
trying to get pngs to save logo
got logo to appear and stay both in uvcdat and bg mode
ok bit of code cleanup
more cleanup
fixed merge conflicts
removed print statements
Add OSMesa (CDAT_BUILD_OFFSCREEN to enable).
removed another set of text  objects that were left over, now 120 plots

seem to not create any extra objects if cleared everytime.