Add notes on building a virtual hardware abstraction layer

Additions
    jbigkit-2.0         JBIG image support
    tiff-4.0.3          TIFF image support

Upgrades
    gdk-pixbuf-2.30.7
    git-1.9.1
    gnumach-1.4-e33a07
    guile-2.0.11
    harfbuzz-0.9.27
    help2man-1.45.1
    hurd-0.5-7b0541
    librsvg-2.40.2
    ncurses-5.9-20140322
    pango-1.36.3
    parallel-20140322