ossl_cipher.c: workaround of OpenSSL API

* ext/openssl/ossl_cipher.c (ossl_cipher_update_long): update huge
  data gradually not to exceed INT_MAX.  workaround of OpenSSL API
  limitation.  [ruby-core:67043] [Bug #10633]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48923 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-12-23

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48924 b2dd03c8-39d4-4d8f-98ff-823fe69b080e