apply patch from Redhat maintainer for guile-2 support     http://jskarvad.fedorapeople.org/graphviz-2.28.0-guile-detect-ac.patch
apply patch from Redhat maintainer for guile-2 support
    http://jskarvad.fedorapeople.org/graphviz-2.28.0-guile-detect-ac.patch

tkelman/graphviz,ellson/graphviz,tkelman/graphviz,tkelman/graphviz,kbrock/graphviz,BMJHayward/graphviz,BMJHayward/graphviz,BMJHayward/graphviz,jho1965us/graphviz,pixelglow/graphviz,pixelglow/graphviz,tkelman/graphviz,kbrock/graphviz,ellson/graphviz,BMJHayward/graphviz,jho1965us/graphviz,MjAbuz/graphviz,pixelglow/graphviz,jho1965us/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,tkelman/graphviz,ellson/graphviz,ellson/graphviz,kbrock/graphviz,kbrock/graphviz,MjAbuz/graphviz,jho1965us/graphviz,jho1965us/graphviz,pixelglow/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,kbrock/graphviz,jho1965us/graphviz,kbrock/graphviz,MjAbuz/graphviz,pixelglow/graphviz,kbrock/graphviz,jho1965us/graphviz,BMJHayward/graphviz,jho1965us/graphviz,kbrock/graphviz,kbrock/graphviz,BMJHayward/graphviz,jho1965us/graphviz,pixelglow/graphviz,ellson/graphviz,pixelglow/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,tkelman/graphviz,pixelglow/graphviz,tkelman/graphviz,tkelman/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,ellson/graphviz,ellson/graphviz,tkelman/graphviz,ellson/graphviz,tkelman/graphviz,pixelglow/graphviz,tkelman/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,kbrock/graphviz,BMJHayward/graphviz,jho1965us/graphviz,pixelglow/graphviz,ellson/graphviz,jho1965us/graphviz,kbrock/graphviz,pixelglow/graphviz,ellson/graphviz,ellson/graphviz