[Curl] setCookiesFromDOM function does not save cookies to disk.

[Curl] setCookiesFromDOM function does not save cookies to disk.
https://bugs.webkit.org/show_bug.cgi?id=109285

Patch by peavo@outlook.com <peavo@outlook.com> on 2013-02-11
Reviewed by Brent Fulgham.

Write cookies to disk by using the Curl easy api.

* platform/network/curl/CookieJarCurl.cpp:
(WebCore::setCookiesFromDOM):Write cookie to disk.
* platform/network/curl/ResourceHandleManager.cpp:
(WebCore::ResourceHandleManager::getCurlShareHandle): Added method to get Curl share handle.
(WebCore::ResourceHandleManager::getCookieJarFileName): Added method to get cookie file name.
* platform/network/curl/ResourceHandleManager.h: Added methods to get cookie file name, and Curl share handle.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@142574 268f45cc-cd09-0410-ab3c-d52691b4dbfc