* advapi32.cc (_ADVAPI32_): Define. Explain why.

(ImpersonateNamedPipeClient): Add missing WINAPI.
	* ntdll.h (STATUS_INVALID_PARAMETER): Only define if it isn't already.
	(STATUS_DLL_NOT_FOUND): Ditto.
	(STATUS_ENTRYPOINT_NOT_FOUND): Ditto.
	(enum _EVENT_TYPE): Guard against redefinition since it's already
	defined in Mingw64's ntdef.h.
	(enum _TIMER_TYPE): Ditto.
	(enum _SECTION_INHERIT): Define if using Mingw64 headers since it's
	missing in Mingw64's ntdef.h.
	* winlean.h (__STRALIGN_H_): Define before including windows.h.

winsup/cygwin/advapi32.cc

@@ -1,6 +1,6 @@
 /* advapi32.cc: Win32 replacement functions.
 
-   Copyright 2011 Red Hat, Inc.
+   Copyright 2011, 2012 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -8,6 +8,10 @@ This software is a copyrighted work licensed under the terms of the
 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
 details. */
 
+/* This define is required to tell the mingw64 headers (or, FWIW, the
+   Microsoft headers) to omit declspec(dllimport) from advapi declarations. */
+#define _ADVAPI32_
+
 #include "winsup.h"
 #include <winioctl.h>
 #include "shared_info.h"
@@ -89,7 +93,7 @@ ImpersonateLoggedOnUser (HANDLE tok)
   DEFAULT_NTSTATUS_TO_BOOL_RETURN
 }
 
-BOOL
+BOOL WINAPI
 ImpersonateNamedPipeClient (HANDLE pipe)
 {
   IO_STATUS_BLOCK io;