Update CI URLs to point to new caching infrastructure (#183)

Author: staticfloat

appveyor.yml

@@ -1,12 +1,12 @@
 environment:
   matrix:
-  - JULIAVERSION: "julialang/bin/winnt/x86/0.4/julia-0.4-latest-win32.exe"
-  - JULIAVERSION: "julialang/bin/winnt/x64/0.4/julia-0.4-latest-win64.exe"
+  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x86/0.4/julia-0.4-latest-win32.exe"
+  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x64/0.4/julia-0.4-latest-win64.exe"
   # The MPI tests with Julia 0.5 are currently broken. We don't quite
   # know why; see <https://github.com/JuliaParallel/MPI.jl/issues/123>
   # for the respective discussion.
-  # - JULIAVERSION: "julianightlies/bin/winnt/x86/julia-latest-win32.exe"
-  # - JULIAVERSION: "julianightlies/bin/winnt/x64/julia-latest-win64.exe"
+  #- JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
+  #- JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
 
 branches:
   only:
@@ -20,9 +20,10 @@ notifications:
     on_build_status_changed: false
 
 install:
+  - ps: "[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12"
 # Download most recent Julia Windows binary
   - ps: (new-object net.webclient).DownloadFile(
-        $("http://s3.amazonaws.com/"+$env:JULIAVERSION),
+        $env:JULIA_URL,
         "C:\projects\julia-binary.exe")
   - ps: (new-object net.webclient).DownloadFile(
         "https://download.microsoft.com/download/D/7/B/D7BBA00F-71B7-436B-80BC-4D22F2EE9862/MSMpiSetup.exe",