Automatic hyperlinking bugs

See the interaction between Text::Structured and magic hyperlinking thread and the hyperlinking fails across tag boundaries thread.

Document Links

Interaction between Text::Structured and magic hyperlinking: Interaction between Text::Structured and magic hyperlinking thread.
http://lists.webarch.co.uk/pipermail/mkdoc-dev/2004-December/000205.html

Hyperlinking fails across tag boundaries: Hyperlinking fails across tag boundaries thread.
http://lists.webarch.co.uk/pipermail/mkdoc-dev/2004-December/000206.html