return shutter to previous state after full focus (open if previously open, closed if previously closed)
return shutter to previous state after full focus (open if previously open, closed if previously closed)

git-svn-id: 03a8048b5ee8463be5048a3801110fb50f378627@9339 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd

kmdouglass/Micro-Manager,kmdouglass/Micro-Manager