* acconfig.h configure.in: Check for Xft2.

        * capplets/font/main.c capplets/font/Makefile.am
        capplets/font/font-properties.glade: If XFt2 is present,
        allow the user to control various font rendering attributes.

        * gnome-settings-daemon/gnome-settings-xsettings.c:
        Mirror the Xft rendering attributes from the font
        capplet to XSETTINGS and Xrdb.

        * schemas/Makefile.am schemas/desktop_gnome_font_rendering.schemas:
        Add schemas for the new GConf settings.