pixmap format to list of supported pixmaps (Egbert Eich).
573. Fix va_args glitches for xterm/libfontconfig: 0 == (void*)0 isn't true
    for all platforms (Egbert Eich).
572. Fix lbxproxy to also build on platforms that don't have snprintf()
    (Egbert Eich).
571. Fix va_args glitches in mkfontscale: arg stack isn't preserved after
    calling va_arg on all platforms (Egbert Eich).
570. Fixed x11perf aa benchmarks to support non-default visuals/colormaps
    (Egbert Eich).