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=98b39de4ee23 *** bignum: delete package - functionality subsumed by package big R=rsc CC=golang-dev http://codereview.appspot.com/1742045