modified the way Rg and chi were returned for foxs and crysol



git-svn-id: https://svn.salilab.org/imp/trunk@16067 e91f8c7b-0e32-4433-a9ac-4502d39a4eab
sync RMF to 095990ec6b40c14021ff410932c45cc57b9f4a7e

git-svn-id: https://svn.salilab.org/imp/trunk@16068 e91f8c7b-0e32-4433-a9ac-4502d39a4eab