[metacafe] Bypass family filter

If you don't send this user=ffilter: false cookie, it will 301 redirect you to a page asking about it, and then the title check will fail.

youtube_dl/extractor/metacafe.py

@@ -50,6 +50,18 @@ class MetacafeIE(InfoExtractor):
             },
             'skip': 'Page is temporarily unavailable.',
         },
+        # metacafe video with family filter
+        {
+            'url': 'http://www.metacafe.com/watch/2155630/adult_art_by_david_hart_156/',
+            'md5': 'b06082c5079bbdcde677a6291fbdf376',
+            'info_dict': {
+                'id': '2155630',
+                'ext': 'mp4',
+                'title': 'Adult Art By David Hart #156',
+                'uploader': 'hartistry',
+                'description': 'Adult Art By David Hart.  All the Art Works presented here are not in the possession of the American Artist, David John Hart.  The paintings are in collections worldwide of individuals, countries, art museums, foundations and charities.',
+            }
+        },
         # AnyClip video
         {
             'url': 'http://www.metacafe.com/watch/an-dVVXnuY7Jh77J/the_andromeda_strain_1971_stop_the_bomb_part_3/',
@@ -148,8 +160,9 @@ class MetacafeIE(InfoExtractor):
         # AnyClip videos require the flashversion cookie so that we get the link
         # to the mp4 file
         headers = {}
+        headers['Cookie'] = 'user=%7B%22ffilter%22%3Afalse%7D;';
         if video_id.startswith('an-'):
-            headers['Cookie'] = 'flashVersion=0;'
+            headers['Cookie'] += ' flashVersion=0;'
 
         # Retrieve video webpage to extract further information
         webpage = self._download_webpage(url, video_id, headers=headers)