CMake: Put "winsock2.h" before "windows.h" during configure checks

"windows.h" includes "winsock.h" what causes many redefinition errors
if "winsock2.h" is included afterwards and can cause build to fail.

CMake/OtherTests.cmake

@@ -10,8 +10,8 @@ endmacro(add_header_include)
 
 set(signature_call_conv)
 if(HAVE_WINDOWS_H)
-  add_header_include(HAVE_WINDOWS_H "windows.h")
   add_header_include(HAVE_WINSOCK2_H "winsock2.h")
+  add_header_include(HAVE_WINDOWS_H "windows.h")
   add_header_include(HAVE_WINSOCK_H "winsock.h")
   set(_source_epilogue
       "${_source_epilogue}\n#ifndef WIN32_LEAN_AND_MEAN\n#define WIN32_LEAN_AND_MEAN\n#endif")