merge revision(s) 33171:
* io.c (argf_next_argv): open in default text mode. [ruby-core:39234] [Bug #5268]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@33211 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 33171:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@33211 b2dd03c8-39d4-4d8f-98ff-823fe69b080e