git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13944 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* benchmark/bm_io_file_(create|read|write).rb: added. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e