Change the Appveyor steps to call the new cue.py script

.appveyor.yml

@@ -98,17 +98,17 @@ matrix:
 
 install:
   - cmd: git submodule update --init --recursive
-  - cmd: python .ci/appveyor/do.py prepare
+  - cmd: python .ci/cue.py prepare
 
 build_script:
-  - cmd: python .ci/appveyor/do.py build
+  - cmd: python .ci/cue.py build
 
 test_script:
-  - cmd: python .ci/appveyor/do.py test
+  - cmd: python .ci/cue.py test
 
 on_finish:
   - ps: Get-ChildItem *.tap -Recurse -Force | % { Push-AppveyorArtifact $_.FullName -FileName $_.Name }
-  - cmd: python .ci/appveyor/do.py build test-results -s
+  - cmd: python .ci/cue.py build test-results -s
 
 #---------------------------------#
 #         debugging               #