Please review: Bug 720059 - RDN with % can cause crashes or missing entries

[Rich Megginson]

https://bugzilla.redhat.com/show_bug.cgi?id=720059

https://bugzilla.redhat.com/attachment.cgi?id=512258&action=diff

https://bugzilla.redhat.com/attachment.cgi?id=512258&action=edit