UrlProtocolHttp: parse received cookies

* We didn't do anything with cookies received from the server, they are
now automatically added to the cookie jar.
 * Also make sure the UrlContext (which holds the cookie jar) is
forwarded from UrlRequest to UrlProtocol when it gets set.

this gets cookies working in Service Kit-based WebKit.

src/kits/network/libnetapi/UrlProtocolHttp.cpp

@@ -508,6 +508,10 @@ BUrlProtocolHttp::_MakeRequest()
 				if ((fContext != NULL) && fHeaders.HasHeader("Set-Cookie")) {
 					for (int32 i = 0;  i < fHeaders.CountHeaders(); i++) {
 						if (fHeaders.HeaderAt(i).NameIs("Set-Cookie")) {
+							BNetworkCookie* cookie = new BNetworkCookie();
+							cookie->ParseCookieStringFromUrl(
+								fHeaders.HeaderAt(i).Value(), fUrl);
+							fContext->GetCookieJar().AddCookie(cookie);
 						}
 					}
 				}

src/kits/network/libnetapi/UrlRequest.cpp

@@ -69,6 +69,9 @@ void
 BUrlRequest::SetContext(BUrlContext* context)
 {
 	fContext = context;
+
+	if (fUrlProtocol != NULL)
+		fUrlProtocol->SetContext(context);
 }