0.4.0.9 Beta 07/27/2014

0.4.0.9 Beta 07/27/2014
--User Changes
Properly set tab order on all controls.
Calculate and report iters/second in the final render dialog.
Immediately draw yellow dot on xform mouse down on previously unselected
xform.

--Bug Fixes
Fix GlynnSim1, GlynnSim2, GlynnSim3 and juliaNab by ensuring the first
argument to pow() is >= 0.
Ensure OpenCL platform and device combo boxes in the final render dialog
expand as needed.

--Code Changes
Make VariationTreeSpinbox take its parent VariationTreeWidgetItem as a
constructor argument. This makes SetupVariationTree() and
VariationSpinBoxValueChanged() more efficient.
Make Interference2 and ho use fabs().