More Appveyor fixes
More Appveyor fixes

- Use just CONFIG-=debug in qmake call
- Create a named artifact for the zip

estan/protoc-gen-doc,pseudomuto/protoc-gen-doc,estan/protoc-gen-doc,pseudomuto/protoc-gen-doc,DengKe1994/protoc-gen-doc,dr-joy/protoc-gen-doc,DengKe1994/protoc-gen-doc,estan/protoc-gen-doc,DengKe1994/protoc-gen-doc,DengKe1994/protoc-gen-doc,dr-joy/protoc-gen-doc