fixed constraints file for vc707.  echo now works again
fixed constraints file for vc707.  echo now works again

hanw/connectal,hanw/connectal,8l/connectal,hanw/connectal,chenm001/connectal,8l/connectal,csail-csg/connectal,cambridgehackers/connectal,hanw/connectal,csail-csg/connectal,cambridgehackers/connectal,hanw/connectal,8l/connectal,chenm001/connectal,8l/connectal,cambridgehackers/connectal,csail-csg/connectal,cambridgehackers/connectal,csail-csg/connectal,8l/connectal,cambridgehackers/connectal,chenm001/connectal,chenm001/connectal,csail-csg/connectal,chenm001/connectal