fix problem with window focus in rgb live mode; add XPositionUm, YPositionUm
fix problem with window focus in rgb live mode; add XPositionUm, YPositionUm

git-svn-id: 03a8048b5ee8463be5048a3801110fb50f378627@7520 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd

kmdouglass/Micro-Manager,kmdouglass/Micro-Manager