- Added curl_easy_getinfo typechecker.

- Added macros for curl_share_setopt and curl_multi_setopt to check at least
  the correct number of arguments.

lib/easy.c

@@ -548,6 +548,7 @@ void Curl_easy_initHandleData(struct SessionHandle *data)
  * curl_easy_getinfo() is an external interface that allows an app to retrieve
  * information from a performed transfer and similar.
  */
+#undef curl_easy_getinfo
 CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ...)
 {
   va_list arg;

lib/multi.c

@@ -1778,6 +1778,7 @@ static CURLMcode multi_socket(struct Curl_multi *multi,
   return result;
 }
 
+#undef curl_multi_setopt
 CURLMcode curl_multi_setopt(CURLM *multi_handle,
                             CURLMoption option, ...)
 {

lib/share.c

@@ -46,6 +46,7 @@ curl_share_init(void)
   return share;
 }
 
+#undef curl_share_setopt
 CURLSHcode
 curl_share_setopt(CURLSH *sh, CURLSHoption option, ...)
 {