i wrote a small script to convert man pages to xowiki pages based PolyglotMan (see http://sourceforge.net/project/showfiles.php?group_id=4293)
This script postprocesses the output of rman, produces xotcl objects of class ::xowiki::Page, which can be directly imported into xowiki 0.18. If you have xowiki installed and you want to import the man(n) pages from tcl, mount xowiki e.g. under /mann, goto /mann/admin/import and load the mann-import.tcl file from below.
Useful? You must be kidding, this is awesome! You could promote XOwiki now to all developers and state that they should use XOwiki for maintaining the man pages 😊.