Added new button to open the link of the message in browser or copy the link of the message.

Added "RSS: " for the forum feeds.
Parse the feedburner:origLink in the rss feed.
Moved download functions to a new class CURLWrapper for easy use.
Added two new functions (currently only for local feeds for testing):
- embed images into the message (works for Qt 4.7 and higher)
- save complete web page

git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs-b1@5399 b45a01b8-16f6-495d-af2f-9b41ad6348cc

plugins/FeedReader/services/util/CURLWrapper.h

@@ -0,0 +1,50 @@
+/****************************************************************
+ *  RetroShare GUI is distributed under the following license:
+ *
+ *  Copyright (C) 2012 by Thunder
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+ ****************************************************************/
+
+#ifndef CURLWRAPPER
+#define CURLWRAPPER
+
+#include <string>
+#include <vector>
+#include <curl/curl.h>
+
+class CURLWrapper
+{
+public:
+	CURLWrapper(const std::string &proxy);
+	~CURLWrapper();
+
+	CURLcode downloadText(const std::string &link, std::string &data);
+	CURLcode downloadBinary(const std::string &link, std::vector<unsigned char> &data);
+
+	long responseCode() { return longInfo(CURLINFO_RESPONSE_CODE); }
+	std::string contentType() { return stringInfo(CURLINFO_CONTENT_TYPE); }
+	std::string effectiveUrl() { return stringInfo(CURLINFO_EFFECTIVE_URL); }
+
+protected:
+	long longInfo(CURLINFO info);
+	std::string stringInfo(CURLINFO info);
+
+private:
+	CURL *mCurl;
+};
+
+#endif