1. model renamed iosf3d -> force1
    modified:   configure.ac
    modified:   data/rc_models/tm/Makefile.am
    renamed:    data/rc_models/tm/iosf3d/Makefile.am -> data/rc_models/tm/force1/Makefile.am
    renamed:    data/rc_models/tm/iosf3d/rc.png -> data/rc_models/tm/force1/rc.png
    renamed:    data/rc_models/tm/iosf3d/rcpositions.xml -> data/rc_models/tm/force1/rcpositions.xml