merge revision(s) 34735,34736:
* io.c (rb_io_s_foreach): return enumerator including kerword arguments. [ruby-dev:45267][Bug #6054] * io.c (rb_io_s_foreach): argument check before making Enumerator. [ruby-dev:31525]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34749 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 34735,34736:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34749 b2dd03c8-39d4-4d8f-98ff-823fe69b080e