Fix for updating post and custom fields

git-svn-id: https://plugins.svn.wordpress.org/auto-post-download/trunk@1004085 b8457f37-d9ea-0310-8a92-e5e31aec5664
Encoding fix

git-svn-id: https://plugins.svn.wordpress.org/auto-post-download/trunk@1004094 b8457f37-d9ea-0310-8a92-e5e31aec5664