Description of problem: fontconfig 2.4 will support embeddedbitmap. So, redhat should deprecate the rh_prefer_bitmap element for the upstream one. I'm not sure exactly what and where needs update, but there are some patches for Xft here: http://lists.freedesktop.org/archives/fontconfig/2005-September/001524.html
Our Xorg X11R7.0 packages do not contain any Red Hat customizations with regard to embedded bitmap for Xft, etc.
Behdad Esfahbod : cairo is using embeddedbitmap option : bug 164374 libXft isn't yet : bug 179522