Remove obsolete reference to ddk; Fixes for -Werror

Bug: 14416410

1. The new mingw-w64 toolchain x86_64-w64-mingw32-4.8 has ddk
   in x86_64-w64-mingw32/include/ddk
2. Add -Wno-error=cpp to suppress a warning that turns into error
   thanks to -Werror:

      Please include winsock2.h before windows.h
3. Cast GetLastError() return type DWORD to "int"
4. Include direct.h for _mkdir
5. Include stdint.h for uint8_t on Windows

Change-Id: I4bec0587f6573692f08c760da6c98ae551b8b5eb
diff --git a/adb/sysdeps_win32.c b/adb/sysdeps_win32.c
index 29f58ec..1904325 100644
--- a/adb/sysdeps_win32.c
+++ b/adb/sysdeps_win32.c
@@ -1549,7 +1549,7 @@
      * reset" event that will remain set once it was set. */
     main_event = CreateEvent(NULL, TRUE, FALSE, NULL);
     if (main_event == NULL) {
-        D("Unable to create main event. Error: %d", GetLastError());
+        D("Unable to create main event. Error: %d", (int)GetLastError());
         free(threads);
         return (int)WAIT_FAILED;
     }