+ LFS dependant parts of libcurl are left out because of off_t,
+ respectively off64_t confusion.
+ Persistent handles and "cookiestore" request option do interfere,
+ as libcurl safes the cookies to the file on curl_easy_destroy(),
+ cookies are not safed until the CURL handle will be recycled.
+ Thus one would either need to
+ * run PHP with http.persistent.handles.limit = 0
+ * call http_persistent_handles_clean() every request
+ * call $HttpRequest->flushCookies(), which is available
+ since libcurl v7.17.1 and does not work with the
+ procedural API
+ Anyway, none of these options is really perfect.
+