revert r42255 ref #8711

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42292 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-08-01

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42293 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* bignum.c (big2str_find_n1): Change the return type to size_t.
  (big2str_orig): Ditto.
  (big2str_karatsuba): Ditto.
  (rb_big2str1): Follow the above changes.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e