winex11.drv: Added ThreadDetach entry point and use it instead of DllMain.

dlls/winex11.drv/winex11.drv.spec

@@ -53,6 +53,7 @@
 @ cdecl WindowPosChanging(long long long ptr ptr ptr ptr) X11DRV_WindowPosChanging
 @ cdecl WindowPosChanged(long long long ptr ptr ptr ptr ptr) X11DRV_WindowPosChanged
 @ cdecl SystemParametersInfo(long long ptr long) X11DRV_SystemParametersInfo
+@ cdecl ThreadDetach() X11DRV_ThreadDetach
 
 # WinTab32
 @ cdecl AttachEventQueueToTablet(long) X11DRV_AttachEventQueueToTablet

dlls/winex11.drv/x11drv_main.c

@@ -597,9 +597,9 @@ static BOOL process_attach(void)
 
 
 /***********************************************************************
- *           X11DRV thread termination routine
+ *           ThreadDetach (X11DRV.@)
  */
-static void thread_detach(void)
+void CDECL X11DRV_ThreadDetach(void)
 {
     struct x11drv_thread_data *data = TlsGetValue( thread_data_tls_index );
 
@@ -690,12 +690,10 @@ BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
     switch(reason)
     {
     case DLL_PROCESS_ATTACH:
+        DisableThreadLibraryCalls( hinst );
         x11drv_module = hinst;
         ret = process_attach();
         break;
-    case DLL_THREAD_DETACH:
-        thread_detach();
-        break;
     }
     return ret;
 }