crashed on calling curl_global_cleanup() with nultithread

[mis98zb]

should comment out curl_global_cleanup() in the put/post/del.
if need gloabal cleanup, may be it is better to add a separated method for it. so as user can call it after all http access finished.

[mrtazz]

good idea. I think making it configurable, so you can choose to not have it clean up for you might be the way to go here.