win32: use lowercase header file name

Author: illwieckz

src/shared/platform/win/lock_impl.h

@@ -8,7 +8,7 @@
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_WIN_LOCK_IMPL_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLATFORM_WIN_LOCK_IMPL_H_
 
-#include <Windows.h>
+#include <windows.h>
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/shared/platform/nacl_sync.h"
 

src/shared/platform/win/xlate_system_error.c

@@ -9,7 +9,7 @@
  */
 
 #include <errno.h>
-#include <WinError.h>
+#include <winerror.h>
 
 #include "native_client/src/shared/platform/nacl_log.h"
 #include "native_client/src/shared/platform/win/xlate_system_error.h"

src/trusted/validator/validation_cache.c

@@ -21,7 +21,7 @@
 #include "native_client/src/trusted/validator/validation_metadata.h"
 
 #if NACL_WINDOWS
-#include <Windows.h>
+#include <windows.h>
 #include <io.h>
 #endif