* bignum.c (abs2twocomp_bang): Removed.
  (abs2twocomp): Take n_ret argument to return actual length.
  (rb_big_and): Follow above change.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41681 b2dd03c8-39d4-4d8f-98ff-823fe69b080e