Declare stubs for ReadFileEx, WriteFileEx.

diff --git a/include/winbase.h b/include/winbase.h
index 22fd008..67f0670 100644
--- a/include/winbase.h
+++ b/include/winbase.h
@@ -1508,22 +1508,23 @@
 #define     QueryDosDevice WINELIB_NAME_AW(QueryDosDevice)
 BOOL        WINAPI QueryPerformanceCounter(LARGE_INTEGER*);
 BOOL        WINAPI QueryPerformanceFrequency(LARGE_INTEGER*);
-BOOL      WINAPI ReadConsoleA(HANDLE,LPVOID,DWORD,LPDWORD,LPVOID);
-BOOL      WINAPI ReadConsoleW(HANDLE,LPVOID,DWORD,LPDWORD,LPVOID);
+BOOL        WINAPI ReadConsoleA(HANDLE,LPVOID,DWORD,LPDWORD,LPVOID);
+BOOL        WINAPI ReadConsoleW(HANDLE,LPVOID,DWORD,LPDWORD,LPVOID);
 #define     ReadConsole WINELIB_NAME_AW(ReadConsole)
 BOOL        WINAPI ReadEventLogA(HANDLE,DWORD,DWORD,LPVOID,DWORD,DWORD *,DWORD *);
 BOOL        WINAPI ReadEventLogW(HANDLE,DWORD,DWORD,LPVOID,DWORD,DWORD *,DWORD *);
 #define     ReadEventLog WINELIB_NAME_AW(ReadEventLog)
-BOOL      WINAPI ReadFile(HANDLE,LPVOID,DWORD,LPDWORD,LPOVERLAPPED);
+BOOL        WINAPI ReadFile(HANDLE,LPVOID,DWORD,LPDWORD,LPOVERLAPPED);
+BOOL        WINAPI ReadFileEx(HANDLE,LPVOID,DWORD,LPOVERLAPPED,LPOVERLAPPED_COMPLETION_ROUTINE);
 HANDLE      WINAPI RegisterEventSourceA(LPCSTR,LPCSTR);
 HANDLE      WINAPI RegisterEventSourceW(LPCWSTR,LPCWSTR);
 #define     RegisterEventSource WINELIB_NAME_AW(RegisterEventSource)
-BOOL      WINAPI ReleaseMutex(HANDLE);
-BOOL      WINAPI ReleaseSemaphore(HANDLE,LONG,LPLONG);
+BOOL        WINAPI ReleaseMutex(HANDLE);
+BOOL        WINAPI ReleaseSemaphore(HANDLE,LONG,LPLONG);
 BOOL        WINAPI ReportEventA(HANDLE,WORD,WORD,DWORD,PSID,WORD,DWORD,LPCSTR *,LPVOID);
 BOOL        WINAPI ReportEventW(HANDLE,WORD,WORD,DWORD,PSID,WORD,DWORD,LPCWSTR *,LPVOID);
 #define     ReportEvent WINELIB_NAME_AW(ReportEvent)
-BOOL      WINAPI ResetEvent(HANDLE);
+BOOL        WINAPI ResetEvent(HANDLE);
 DWORD       WINAPI ResumeThread(HANDLE);
 BOOL        WINAPI RevertToSelf(void);
 DWORD       WINAPI SearchPathA(LPCSTR,LPCSTR,LPCSTR,DWORD,LPSTR,LPSTR*);