Add merge button to XY Position List (not implemented yet)
Add merge button to XY Position List (not implemented yet)

git-svn-id: 03a8048b5ee8463be5048a3801110fb50f378627@12615 d0ab736e-dc22-4aeb-8dc9-08def0aa14fd

kmdouglass/Micro-Manager,kmdouglass/Micro-Manager