facebook: Change collection attribute names:  - "url" for common URL attribute.  - "x-facebook-privacy" for Facebook specific attribute.
facebook: Change collection attribute names:
 - "url" for common URL attribute.
 - "x-facebook-privacy" for Facebook specific attribute.

ThomasBollmeier/libsocialweb-flickr-oauth,lcp/libsocialweb,GNOME/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,lcp/libsocialweb,GNOME/libsocialweb,GNOME/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,lcp/libsocialweb