WolfSSL - make it compilable also with older versions of Windows SDK.

followup 136e866
Remove HAVE_CONFIG_H from wolfssl compilation.

WolfSSL knows about it, and would include server's config.h, which is
mostly fine, but server pretends to have HAVE_GMTIME_R on Windows, which
leads to compilation problems. In any case, on Windows, there is no need
for config.h for WolfSSL, and no need for gmtime_r/_s(), as gmtime() is
thread-safe on Windpows (it returns pointer to thread-local struct)

Author: vaintroub

extra/wolfssl/CMakeLists.txt

@@ -130,8 +130,9 @@ if(MSVC)
   if(CMAKE_C_COMPILER_ID MATCHES Clang)
     target_compile_options(wolfssl PRIVATE $<$<COMPILE_LANGUAGE:C>:-Wno-incompatible-function-pointer-types>)
   endif()
+  remove_definitions(-DHAVE_CONFIG_H)
   target_compile_definitions(wolfssl PRIVATE
-    _CRT_USE_CONFORMING_ANNEX_K_TIME HAVE_GMTIME_S WOLFSSL_HAVE_MIN WOLFSSL_HAVE_MAX)
+    WOLFSSL_HAVE_MIN WOLFSSL_HAVE_MAX)
 endif()
 
 CONFIGURE_FILE(user_settings.h.in user_settings.h)