Ruby

• bignum.c (bary_mul2): New function.
  (rb_cstr_to_inum): Use a better algorithm to compose the result
  if input length is very long.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e