mswin: static-linked-ext
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
mswin: static-linked-ext
define RUBY_EXPORT for static-linked-ext mswin. [Bug #7960]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e