merge revision(s) 49154: [Backport #10384]
ext/-test-/dln/empty: move from ext/-test-/win32/dln
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54342 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 49154: [Backport #10384]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@54342 b2dd03c8-39d4-4d8f-98ff-823fe69b080e