Fix crash at process init on 64 bit XP/2003 under WOW64

* init.cc (munge_threadfunc): Don't call NtQueryInformationThread with
	ThreadQuerySetWin32StartAddress info class on XP 64 and Server 2003 64.
	It crashes.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/ChangeLog

@@ -1,3 +1,9 @@
+2015-11-12  Corinna Vinschen  <corinna@vinschen.de>
+
+	* init.cc (munge_threadfunc): Don't call NtQueryInformationThread with
+	ThreadQuerySetWin32StartAddress info class on XP 64 and Server 2003 64.
+	It crashes.
+
 2015-11-09  Corinna Vinschen  <corinna@vinschen.de>
 
 	* include/cygwin/version.h (CYGWIN_VERSION_DLL_MINOR): Bump to 1.

winsup/cygwin/init.cc

@@ -57,6 +57,9 @@ munge_threadfunc ()
     {
       char *threadfunc = NULL;
 
+      if (wincap.wow64_has_secondary_stack ())
+	threadfunc = ebp[threadfunc_ix[0]];
+      else
 	NtQueryInformationThread (NtCurrentThread (),
 				  ThreadQuerySetWin32StartAddress,
 				  &threadfunc, sizeof threadfunc, NULL);

winsup/cygwin/release/2.3.1

@@ -0,0 +1,14 @@
+What's new:
+-----------
+
+
+What changed:
+-------------
+
+
+Bug Fixes
+---------
+
+- The fix for wine introduced in 2.3.0 crashes in 32 bit Cygwin on 64 bit XP
+  and 64 bit Server 2003 only.   This should work now.
+  Addresses: https://cygwin.com/ml/cygwin/2015-11/msg00187.html