merge revision(s) 34576:
* io.c (Init_IO): use directive hack to make ARGF documentable in other tools. [ruby-core:42515][Bug #6007]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34578 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 34576:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34578 b2dd03c8-39d4-4d8f-98ff-823fe69b080e