VS: Use version-specific subsystem for WinCE compiler id (#14440)

The subsystem must be set to WINDWOSCE for some SDKs to link an
executable. Set it to 9 for VS2005 and to 8 for VS2008, since the
value differs between the different Visual Studio versions.

Modules/CMakeDetermineCompilerId.cmake

@@ -133,7 +133,11 @@ Id flags: ${testflags}
     endif()
     if(CMAKE_VS_WINCE_VERSION)
       set(id_entrypoint "mainACRTStartup")
-      set(id_subsystem 9)
+      if("${vs_version}" VERSION_LESS 9)
+        set(id_subsystem 9)
+      else()
+        set(id_subsystem 8)
+      endif()
     else()
       set(id_subsystem 1)
     endif()