Update p5-HTML-GenerateUtil to 1.11.

Changes from previous:
----------------------
1.11  Fri Jul 15 17:55:00 2011
  - Document $H object with AUTOLOAD functions

1.10  Mon May 22 14:51:00 2009
  - Allow single argument version of escape_html()

1.09  Thu Mar 13 16:00:00 2008
  - Add an AUTOLOAD method which calls generate_tag

1.08  Fri Oct 19 17:09:00 2007
	- if you use s/(...)/escape_uri($1)/, then $1 might not be SvOK()
    because it's magic. Need to call SvGETMAGIC first
Add a TODO file mentionning the recent SA52721 affecting mongodb.