Fix incorrect deprecation warnings on res.download

fixes #2284
deps: qs@1.1.0
deps: connect@2.25.1
deps: mocha@~1.21.4
3.16.1
Merge tag '3.16.1'
deps: update example dependencies
docs: update examples for deprecations
4.8.1
deps: connect@2.25.2
3.16.2
Merge tag '3.16.2'
deps: qs@1.2.0
4.8.2
deps: connect@2.25.3
3.16.3
deps: connect@2.25.4
deps: parseurl@~1.3.0
Fix original URL parsing in res.location
3.16.4