patch for Visual Studio 9 2008 x64 failed builds

appveyor-patch.ps1

@@ -0,0 +1,11 @@
+# Script to patch Appveyor build environment for Visual Studio 2008 64bit
+
+$url = "https://github.com/menpo/condaci/raw/master/vs2008_patch.zip"
+$output = "$pwd\build\vs2008_patch.zip"
+
+(New-Object System.Net.WebClient).DownloadFile($url, $output)
+
+7z -e "$pwd\build\vs2008_patch.zip"
+cmd.exe /c "$pwd\build\vs2008_patch\setup_x64.bat"
+
+