Squashed 'extlib/magpierss/' content from commit 5cc0a9a

git-subtree-dir: extlib/magpierss
git-subtree-split: 5cc0a9adff6b93609bd5970acc2fe9cb341f94fd
Merge commit '9335b28349e1a88f82c166ad74226354f61edb43' as 'extlib/magpierss'
Replace MagpieRSS with new version

Also, MagpieRSS includes subtree Snoopy.
Change output encoding to UTF-8 from ISO-8859-1