Don't build libNew.dll on Windows

core/CMakeLists.txt

@@ -20,7 +20,9 @@ if(builtin_pcre)
 endif()
 add_subdirectory(rint)
 add_subdirectory(thread)
-add_subdirectory(newdelete)
+if(NOT WIN32)
+  add_subdirectory(newdelete)
+endif()
 add_subdirectory(clib)
 add_subdirectory(cont)
 add_subdirectory(textinput)