Hack to add test output for windows

Author: bnbarham

utils/build-windows.bat

@@ -295,7 +295,7 @@ endlocal
 :: Tests the Swift compiler and the Swift Standard Library
 setlocal enableextensions enabledelayedexpansion
 
-cmake --build "%build_root%\swift" --target check-swift %exitOnError%
+ninja -C "%build_root%\swift" check-swift
 
 goto :eof
 endlocal