"private" subfolders violate the structure of the project,
since the existence of all other subfolders is based on a
different principle.
In addition, there is no clear line between "private" and
"non private".
Many sites include various HTML entities in the content of RSS feeds.
The most of these entities are not declared in the underlying XML,
so the documents are considered by parser to be malformed.
This patch allows you to successfully parse such soft-malformed
RSS feeds.
Closes#8527.
Closes#8569.