Merge branch 'cam-py' of https://github.com/andrewjrobinson/FreeCAD_sf_master into nightly
Merge branch 'nightly' of https://github.com/DavidNicholls/FreeCAD_sf_master into nightly
Added code to the PostProcessorInst::postProcess() method to remember where stdout and stderr were pointing before we redirected them.  We then reinstate these original pointers before we leave.  Just to cleanup the mess we made during processing