Add new function _gdk_screen_get_font_map() and have one fontmap per

Add new function _gdk_screen_get_font_map() and have one fontmap per

2006-05-21  Behdad Esfahbod  <behdad@gnome.org>

        * gdk/gdkinternals.h:
        * gdk/gdkscreen.c (gdk_screen_class_init), (gdk_screen_finalize),
        (update_fontmap_resolution), (gdk_screen_set_resolution):  Add new
        function _gdk_screen_get_font_map() and have one fontmap per screen,
        with the correct resolution set on it.

        * gdk/gdkpango.c (gdk_pango_context_get_for_screen): Use
        _gdk_screen_get_font_map() instead of setting resolution on the
        PangoCairoContext.  (#342529)