Windows build fixes

server/http/manifest.py

 # Manifest of files to include in the simple HTTP server.
 # Run this script to generate the httpdocs.cpp source file.
 
+# For Python 2.7. Not yet compatible with Python 3.
+
 manifest = [
     ('/', 'index.html', 'text/html'),
 

server/src/usbdevice.cpp

@@ -21,8 +21,8 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include "usbdevice.h"
 #include "libwebsockets.h"   // Lazy portable way to get gettimeofday()
+#include "usbdevice.h"
 #include <iostream>