message: Explicitly choose the Windows 8.1 SDK on CI
diff: @@ -258,7 +258,12 @@ def doAndroidBuildInDocker(String abi, String buildType, boolean runTestsInEmula
  }
  def doBuildWindows(String buildType, boolean isUWP, String platform) {
  - def cmakeDefinitions = isUWP ? '-DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=10.0 -DREALM_BUILD_LIB_ONLY=1' : ''
  + def cmakeDefinitions;
  + if (isUWP) {
  + cmakeDefinitions = '-DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=10.0 -DREALM_BUILD_LIB_ONLY=1'
  + } else {
  + cmakeDefinitions = '-DCMAKE_SYSTEM_VERSION=8.1'
  + }
  return {
  node('windows') {
  