In the scan of sub-config trees, mod_info sometimes seems to lose track of where it was, failing to 
provide all information and/or scrambling the </close> tags. This seems particularly evident in 
<VirtualHost> sections.

The easiest way to fix it seemed to be to rewrite the tree scan recursively; the enclosed patch 
implements that, as well as correctly indenting subsection headers and allowing for indentation nesting  
of more than two levels.

It also implements a new feature: ?config simply dumps the entire configuration tree without sorting it 
into modules. I left the indentation incorrect in the second part in order to avoid adding 130 specious 
lines to the patch.

The file in the url is the complete mod_info.c, detabbed and indented properly