Fix Visual Studio build with long filenames
Fix Visual Studio build with long filenames

Massive thanks to @tmat and @nguerrera for this workaround.

chrisdunelm/google-cloud-dotnet,evildour/google-cloud-dotnet,googleapis/google-cloud-dotnet,jskeet/gcloud-dotnet,benwulfe/google-cloud-dotnet,chrisdunelm/google-cloud-dotnet,jskeet/google-cloud-dotnet,chrisdunelm/google-cloud-dotnet,jskeet/google-cloud-dotnet,jskeet/google-cloud-dotnet,googleapis/google-cloud-dotnet,iantalarico/google-cloud-dotnet,iantalarico/google-cloud-dotnet,benwulfe/google-cloud-dotnet,jskeet/google-cloud-dotnet,googleapis/google-cloud-dotnet,jskeet/google-cloud-dotnet,evildour/google-cloud-dotnet,benwulfe/google-cloud-dotnet,evildour/google-cloud-dotnet,iantalarico/google-cloud-dotnet,chrisdunelm/gcloud-dotnet