Pass new scorefxn along to lowres and highres movers when set (PR #3565)
Previously, if you called set_lowres_scorefxn or set_highres_scorefxn,
DockingProtocol would store your new scorefxn in a pointer, but wouldn't
alter the docking loweres mover or the docking highres mover. Your changes
were effectively ignored! This also affected rosetta_scripts, as
parse_my_tag invoked these functions.
Now, when you invoke any of these functions (there are four, as the
set_highres_scorefxn function is overloaded), the change is passed
along to the mover that's going to actually perform the docking.