Comment 8 for bug 1063970

This also holds for pantheon-files:

QA Notice: This package installs one or more .desktop files that do not pass validation.

/usr/share/applications/pantheon-files.desktop: error: file contains group "Root Shortcut Group", but groups extending the format should start with "X-"
/usr/share/applications/pantheon-files.desktop: error: file contains group "TabNew Shortcut Group", but groups extending the format should start with "X-"
/usr/share/applications/pantheon-files.desktop: error: file contains group "WindowNew Shortcut Group", but groups extending the format should start with "X-"
/usr/share/applications/pantheon-files.desktop: warning: value "x-directory/gnome-default-handler;x-directory/normal;inode/directory;" for key "MimeType" in group "Desktop Entry" contains value "x-directory/gnome-default-handler" which is a MIME type that should probably not be used: "x-directory" is an old media type that should be replaced with a modern equivalent
/usr/share/applications/pantheon-files.desktop: warning: value "x-directory/gnome-default-handler;x-directory/normal;inode/directory;" for key "MimeType" in group "Desktop Entry" contains value "x-directory/normal" which is a MIME type that should probably not be used: "x-directory" is an old media type that should be replaced with a modern equivalent