hookup_moveoff.tcl: fix fb connections

Connect all pins that were inputs on the original feedback signal
together to maintain original pid feedback connectivity
(fixes runaway with misconnected pid feedback)

also
  Use highest_joint_num for personality= in case ini file omits
  AXIS_n sections  (xzc for example)

  Add note on alias names in setup_pinnames()

Signed-off-by: Dewey Garrett <dgarrett@panix.com>