add richtext to the map

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@74149 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
richtext module needs to link with html libs

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@74150 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775