Hello rsc (cc: golang-dev@googlegroups.com), I'd like you to review this change.
LGTM
*** Submitted as http://code.google.com/p/go/source/detail?r=e59b6cd93eaa *** Makefiles: Don't define _64BIT now that 6c does it by default. R=rsc CC=golang-dev http://codereview.appspot.com/3207041