yaml/yaml_private.h: include ruby/extconf.h
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44817 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
yaml/yaml_private.h: include ruby/extconf.h
HAVE_CONFIG_H.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44817 b2dd03c8-39d4-4d8f-98ff-823fe69b080e