Added wxFont SetNoAntiAliasing which cannot cause
problems with existing apps since it doesn't
changing the current style flags.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17636 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775